diff options
Diffstat (limited to 'src/nvim/if_cscope.c')
| -rw-r--r-- | src/nvim/if_cscope.c | 2052 |
1 files changed, 0 insertions, 2052 deletions
diff --git a/src/nvim/if_cscope.c b/src/nvim/if_cscope.c deleted file mode 100644 index 689d1fce0d..0000000000 --- a/src/nvim/if_cscope.c +++ /dev/null @@ -1,2052 +0,0 @@ -// This is an open source non-commercial project. Dear PVS-Studio, please check -// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com - -/* - * CSCOPE support for Vim added by Andy Kahn <kahn@zk3.dec.com> - * Ported to Win32 by Sergey Khorev <sergey.khorev@gmail.com> - * - * The basic idea/structure of cscope for Vim was borrowed from Nvi. There - * might be a few lines of code that look similar to what Nvi has. - */ - -#include <assert.h> -#include <errno.h> -#include <fcntl.h> -#include <inttypes.h> -#include <stdbool.h> -#include <sys/stat.h> -#include <sys/types.h> - -#include "nvim/ascii.h" -#include "nvim/autocmd.h" -#include "nvim/buffer.h" -#include "nvim/charset.h" -#include "nvim/eval.h" -#include "nvim/event/stream.h" -#include "nvim/ex_eval.h" -#include "nvim/fileio.h" -#include "nvim/if_cscope.h" -#include "nvim/memory.h" -#include "nvim/message.h" -#include "nvim/os/input.h" -#include "nvim/os/os.h" -#include "nvim/os/time.h" -#include "nvim/path.h" -#include "nvim/quickfix.h" -#include "nvim/strings.h" -#include "nvim/tag.h" -#include "nvim/window.h" -#if defined(UNIX) -# include <sys/wait.h> -#endif -#include "nvim/if_cscope_defs.h" - -#ifdef INCLUDE_GENERATED_DECLARATIONS -# include "if_cscope.c.generated.h" -#endif - -static csinfo_T *csinfo = NULL; -static size_t csinfo_size = 0; // number of items allocated in csinfo[] - -static int eap_arg_len; // length of eap->arg, set in cs_lookup_cmd() -static cscmd_T cs_cmds[] = -{ - { "add", cs_add, - N_("Add a new database"), "add file|dir [pre-path] [flags]", 0 }, - { "find", cs_find, - N_("Query for a pattern"), "find a|c|d|e|f|g|i|s|t name", 1 }, - { "help", cs_help, - N_("Show this message"), "help", 0 }, - { "kill", cs_kill, - N_("Kill a connection"), "kill #", 0 }, - { "reset", cs_reset, - N_("Reinit all connections"), "reset", 0 }, - { "show", cs_show, - N_("Show connections"), "show", 0 }, - { NULL, NULL, NULL, NULL, 0 } -}; - -static void cs_usage_msg(csid_e x) -{ - (void)semsg(_("E560: Usage: cs[cope] %s"), cs_cmds[(int)x].usage); -} - -static enum { - EXP_CSCOPE_SUBCMD, // expand ":cscope" sub-commands - EXP_SCSCOPE_SUBCMD, // expand ":scscope" sub-commands - EXP_CSCOPE_FIND, // expand ":cscope find" arguments - EXP_CSCOPE_KILL, // expand ":cscope kill" arguments -} expand_what; - -/* - * Function given to ExpandGeneric() to obtain the cscope command - * expansion. - */ -char *get_cscope_name(expand_T *xp, int idx) -{ - int current_idx; - - switch (expand_what) { - case EXP_CSCOPE_SUBCMD: - // Complete with sub-commands of ":cscope": - // add, find, help, kill, reset, show - return cs_cmds[idx].name; - case EXP_SCSCOPE_SUBCMD: { - // Complete with sub-commands of ":scscope": same sub-commands as - // ":cscope" but skip commands which don't support split windows - int i; - for (i = 0, current_idx = 0; cs_cmds[i].name != NULL; i++) { - if (cs_cmds[i].cansplit) { - if (current_idx++ == idx) { - break; - } - } - } - return cs_cmds[i].name; - } - case EXP_CSCOPE_FIND: { - const char *query_type[] = - { - "a", "c", "d", "e", "f", "g", "i", "s", "t", NULL - }; - - // Complete with query type of ":cscope find {query_type}". - // {query_type} can be letters (c, d, ... a) or numbers (0, 1, - // ..., 9) but only complete with letters, since numbers are - // redundant. - return (char *)query_type[idx]; - } - case EXP_CSCOPE_KILL: { - static char connection[5]; - - // ":cscope kill" accepts connection numbers or partial names of - // the pathname of the cscope database as argument. Only complete - // with connection numbers. -1 can also be used to kill all - // connections. - size_t i; - for (i = 0, current_idx = 0; i < csinfo_size; i++) { - if (csinfo[i].fname == NULL) { - continue; - } - if (current_idx++ == idx) { - vim_snprintf(connection, sizeof(connection), "%zu", i); - return connection; - } - } - return (current_idx == idx && idx > 0) ? "-1" : NULL; - } - default: - return NULL; - } -} - -/* - * Handle command line completion for :cscope command. - */ -void set_context_in_cscope_cmd(expand_T *xp, const char *arg, cmdidx_T cmdidx) -{ - // Default: expand subcommands. - xp->xp_context = EXPAND_CSCOPE; - xp->xp_pattern = (char *)arg; - expand_what = ((cmdidx == CMD_scscope) - ? EXP_SCSCOPE_SUBCMD : EXP_CSCOPE_SUBCMD); - - // (part of) subcommand already typed - if (*arg != NUL) { - const char *p = (const char *)skiptowhite((const char_u *)arg); - if (*p != NUL) { // Past first word. - xp->xp_pattern = skipwhite(p); - if (*skiptowhite((char_u *)xp->xp_pattern) != NUL) { - xp->xp_context = EXPAND_NOTHING; - } else if (STRNICMP(arg, "add", p - arg) == 0) { - xp->xp_context = EXPAND_FILES; - } else if (STRNICMP(arg, "kill", p - arg) == 0) { - expand_what = EXP_CSCOPE_KILL; - } else if (STRNICMP(arg, "find", p - arg) == 0) { - expand_what = EXP_CSCOPE_FIND; - } else { - xp->xp_context = EXPAND_NOTHING; - } - } - } -} - -/// Find the command, print help if invalid, and then call the corresponding -/// command function. -/// -/// @param make_split whether to split window -static void do_cscope_general(exarg_T *eap, int make_split) -{ - cscmd_T *cmdp; - - if ((cmdp = cs_lookup_cmd(eap)) == NULL) { - cs_help(eap); - return; - } - - if (make_split) { - if (!cmdp->cansplit) { - (void)msg_puts(_("This cscope command does not support splitting the window.\n")); - return; - } - postponed_split = -1; - postponed_split_flags = cmdmod.cmod_split; - postponed_split_tab = cmdmod.cmod_tab; - } - - cmdp->func(eap); - - postponed_split_flags = 0; - postponed_split_tab = 0; -} - -/// Implementation of ":cscope" and ":lcscope" -void ex_cscope(exarg_T *eap) -{ - do_cscope_general(eap, FALSE); -} - -/// Implementation of ":scscope". Same as ex_cscope(), but splits window, too. -void ex_scscope(exarg_T *eap) -{ - do_cscope_general(eap, TRUE); -} - -/// Implementation of ":cstag" -void ex_cstag(exarg_T *eap) -{ - int ret = FALSE; - - if (*eap->arg == NUL) { - (void)emsg(_("E562: Usage: cstag <ident>")); - return; - } - - switch (p_csto) { - case 0: - if (cs_check_for_connections()) { - ret = cs_find_common("g", eap->arg, eap->forceit, false, - false, (char_u *)(*eap->cmdlinep)); - if (ret == false) { - cs_free_tags(); - if (msg_col) { - msg_putchar('\n'); - } - - if (cs_check_for_tags()) { - ret = do_tag((char_u *)eap->arg, DT_JUMP, 0, eap->forceit, false); - } - } - } else if (cs_check_for_tags()) { - ret = do_tag((char_u *)eap->arg, DT_JUMP, 0, eap->forceit, false); - } - break; - case 1: - if (cs_check_for_tags()) { - ret = do_tag((char_u *)eap->arg, DT_JUMP, 0, eap->forceit, false); - if (ret == false) { - if (msg_col) { - msg_putchar('\n'); - } - - if (cs_check_for_connections()) { - ret = cs_find_common("g", eap->arg, eap->forceit, - false, false, (char_u *)(*eap->cmdlinep)); - if (ret == false) { - cs_free_tags(); - } - } - } - } else if (cs_check_for_connections()) { - ret = cs_find_common("g", eap->arg, eap->forceit, false, - false, (char_u *)(*eap->cmdlinep)); - if (ret == false) { - cs_free_tags(); - } - } - break; - default: - break; - } - - if (!ret) { - (void)emsg(_("E257: cstag: tag not found")); - g_do_tagpreview = 0; - } -} - -/// This simulates a vim_fgets(), but for cscope, returns the next line -/// from the cscope output. should only be called from find_tags() -/// -/// @return true if eof, FALSE otherwise -bool cs_fgets(char_u *buf, int size) - FUNC_ATTR_NONNULL_ALL -{ - char *p; - - if ((p = cs_manage_matches(NULL, NULL, 0, Get)) == NULL) { - return true; - } - STRLCPY(buf, p, size); - - return false; -} - -/// Called only from do_tag(), when popping the tag stack. -void cs_free_tags(void) -{ - cs_manage_matches(NULL, NULL, 0, Free); -} - -/// Called from do_tag(). -void cs_print_tags(void) -{ - cs_manage_matches(NULL, NULL, 0, Print); -} - -/* - * "cscope_connection([{num} , {dbpath} [, {prepend}]])" function - * - * Checks for the existence of a |cscope| connection. If no - * parameters are specified, then the function returns: - * - * 0, if cscope was not available (not compiled in), or if there - * are no cscope connections; or - * 1, if there is at least one cscope connection. - * - * If parameters are specified, then the value of {num} - * determines how existence of a cscope connection is checked: - * - * {num} Description of existence check - * ----- ------------------------------ - * 0 Same as no parameters (e.g., "cscope_connection()"). - * 1 Ignore {prepend}, and use partial string matches for - * {dbpath}. - * 2 Ignore {prepend}, and use exact string matches for - * {dbpath}. - * 3 Use {prepend}, use partial string matches for both - * {dbpath} and {prepend}. - * 4 Use {prepend}, use exact string matches for both - * {dbpath} and {prepend}. - * - * Note: All string comparisons are case sensitive! - */ -bool cs_connection(int num, char_u *dbpath, char_u *ppath) -{ - if (num < 0 || num > 4 || (num > 0 && !dbpath)) { - return false; - } - - for (size_t i = 0; i < csinfo_size; i++) { - if (!csinfo[i].fname) { - continue; - } - if (num == 0) { - return true; - } - switch (num) { - case 1: - if (strstr(csinfo[i].fname, (char *)dbpath)) { - return true; - } - break; - case 2: - if (strcmp(csinfo[i].fname, (char *)dbpath) == 0) { - return true; - } - break; - case 3: - if (strstr(csinfo[i].fname, (char *)dbpath) - && ((!ppath && !csinfo[i].ppath) - || (ppath - && csinfo[i].ppath - && strstr(csinfo[i].ppath, (char *)ppath)))) { - return true; - } - break; - case 4: - if ((strcmp(csinfo[i].fname, (char *)dbpath) == 0) - && ((!ppath && !csinfo[i].ppath) - || (ppath - && csinfo[i].ppath - && (strcmp(csinfo[i].ppath, (char *)ppath) == 0)))) { - return true; - } - break; - } - } - - return false; -} // cs_connection - -/* - * PRIVATE functions - ****************************************************************************/ - -/// Add cscope database or a directory name (to look for cscope.out) -/// to the cscope connection list. -static int cs_add(exarg_T *eap) -{ - char *fname, *ppath, *flags = NULL; - - if ((fname = strtok((char *)NULL, (const char *)" ")) == NULL) { - cs_usage_msg(Add); - return CSCOPE_FAILURE; - } - if ((ppath = strtok((char *)NULL, (const char *)" ")) != NULL) { - flags = strtok((char *)NULL, (const char *)" "); - } - - return cs_add_common(fname, ppath, flags); -} - -static void cs_stat_emsg(char *fname) -{ - int err = errno; - (void)semsg(_("E563: stat(%s) error: %d"), fname, err); -} - -/// The common routine to add a new cscope connection. Called by -/// cs_add() and cs_reset(). I really don't like to do this, but this -/// routine uses a number of goto statements. -/// -/// @param arg1 filename - may contain environment variables -/// @param arg2 prepend path - may contain environment variables -static int cs_add_common(char *arg1, char *arg2, char *flags) -{ - char *fname = NULL; - char *fname2 = NULL; - char *ppath = NULL; - size_t usedlen = 0; - char *fbuf = NULL; - - // get the filename (arg1), expand it, and try to stat it - fname = xmalloc(MAXPATHL + 1); - - expand_env((char_u *)arg1, (char_u *)fname, MAXPATHL); - size_t len = STRLEN(fname); - fbuf = fname; - (void)modify_fname(":p", false, &usedlen, &fname, &fbuf, &len); - if (fname == NULL) { - goto add_err; - } - fname = xstrnsave(fname, len); - xfree(fbuf); - FileInfo file_info; - bool file_info_ok = os_fileinfo(fname, &file_info); - if (!file_info_ok) { -staterr: - if (p_csverbose) { - cs_stat_emsg(fname); - } - goto add_err; - } - - // get the prepend path (arg2), expand it, and see if it exists - if (arg2 != NULL) { - ppath = xmalloc(MAXPATHL + 1); - expand_env((char_u *)arg2, (char_u *)ppath, MAXPATHL); - if (!os_path_exists((char_u *)ppath)) { - goto staterr; - } - } - - int i; - // if filename is a directory, append the cscope database name to it - if (S_ISDIR(file_info.stat.st_mode)) { - fname2 = (char *)xmalloc(strlen(CSCOPE_DBFILE) + strlen(fname) + 2); - - while (fname[strlen(fname) - 1] == '/' - ) { - fname[strlen(fname) - 1] = '\0'; - if (fname[0] == '\0') { - break; - } - } - if (fname[0] == '\0') { - (void)sprintf(fname2, "/%s", CSCOPE_DBFILE); - } else { - (void)sprintf(fname2, "%s/%s", fname, CSCOPE_DBFILE); - } - - file_info_ok = os_fileinfo(fname2, &file_info); - if (!file_info_ok) { - if (p_csverbose) { - cs_stat_emsg(fname2); - } - goto add_err; - } - - i = cs_insert_filelist(fname2, ppath, flags, &file_info); - } else if (S_ISREG(file_info.stat.st_mode) || S_ISLNK(file_info.stat.st_mode)) { - i = cs_insert_filelist(fname, ppath, flags, &file_info); - } else { - if (p_csverbose) { - (void)semsg(_("E564: %s is not a directory or a valid cscope database"), - fname); - } - goto add_err; - } - - if (i != -1) { - assert(i >= 0); - if (cs_create_connection((size_t)i) == CSCOPE_FAILURE - || cs_read_prompt((size_t)i) == CSCOPE_FAILURE) { - cs_release_csp((size_t)i, true); - goto add_err; - } - - if (p_csverbose) { - msg_clr_eos(); - (void)smsg_attr(HL_ATTR(HLF_R), - _("Added cscope database %s"), - csinfo[i].fname); - } - } - - xfree(fname); - xfree(fname2); - xfree(ppath); - return CSCOPE_SUCCESS; - -add_err: - xfree(fname2); - xfree(fname); - xfree(ppath); - return CSCOPE_FAILURE; -} - -static bool cs_check_for_connections(void) -{ - return cs_cnt_connections() > 0; -} - -static int cs_check_for_tags(void) -{ - return p_tags[0] != NUL && curbuf->b_p_tags != NULL; -} - -/// Count the number of cscope connections. -static size_t cs_cnt_connections(void) -{ - size_t cnt = 0; - - for (size_t i = 0; i < csinfo_size; i++) { - if (csinfo[i].fname != NULL) { - cnt++; - } - } - return cnt; -} - -/// @param idx connection index -static void cs_reading_emsg(size_t idx) -{ - semsg(_("E262: error reading cscope connection %" PRIu64), (uint64_t)idx); -} - -#define CSREAD_BUFSIZE 2048 -/// Count the number of matches for a given cscope connection. -static int cs_cnt_matches(size_t idx) -{ - char *stok; - int nlines = 0; - - char *buf = xmalloc(CSREAD_BUFSIZE); - for (;;) { - errno = 0; - if (!fgets(buf, CSREAD_BUFSIZE, csinfo[idx].fr_fp)) { - if (errno == EINTR) { - continue; - } - - if (feof(csinfo[idx].fr_fp)) { - errno = EIO; - } - - cs_reading_emsg(idx); - - xfree(buf); - return CSCOPE_FAILURE; - } - - // If the database is out of date, or there's some other problem, - // cscope will output error messages before the number-of-lines output. - // Display/discard any output that doesn't match what we want. - // Accept "\S*cscope: X lines", also matches "mlcscope". - // Bail out for the "Unable to search" error. - if (strstr((const char *)buf, "Unable to search database") != NULL) { - break; - } - if ((stok = strtok(buf, (const char *)" ")) == NULL) { - continue; - } - if (strstr((const char *)stok, "cscope:") == NULL) { - continue; - } - - if ((stok = strtok(NULL, (const char *)" ")) == NULL) { - continue; - } - nlines = atoi(stok); - if (nlines < 0) { - nlines = 0; - break; - } - - if ((stok = strtok(NULL, (const char *)" ")) == NULL) { - continue; - } - if (strncmp(stok, "lines", 5)) { - continue; - } - - break; - } - - xfree(buf); - return nlines; -} - -/// Creates the actual cscope command query from what the user entered. -static char *cs_create_cmd(char *csoption, char *pattern) -{ - char *cmd; - short search; - char *pat; - - switch (csoption[0]) { - case '0': - case 's': - search = 0; - break; - case '1': - case 'g': - search = 1; - break; - case '2': - case 'd': - search = 2; - break; - case '3': - case 'c': - search = 3; - break; - case '4': - case 't': - search = 4; - break; - case '6': - case 'e': - search = 6; - break; - case '7': - case 'f': - search = 7; - break; - case '8': - case 'i': - search = 8; - break; - case '9': - case 'a': - search = 9; - break; - default: - (void)emsg(_("E561: unknown cscope search type")); - cs_usage_msg(Find); - return NULL; - } - - // Skip white space before the patter, except for text and pattern search, - // they may want to use the leading white space. - pat = pattern; - if (search != 4 && search != 6) { - while (ascii_iswhite(*pat)) { - pat++; - } - } - - cmd = xmalloc(strlen(pat) + 2); - - (void)sprintf(cmd, "%d%s", search, pat); - - return cmd; -} - -/// This piece of code was taken/adapted from nvi. do we need to add -/// the BSD license notice? -static int cs_create_connection(size_t i) -{ -#ifdef UNIX - int to_cs[2], from_cs[2]; -#endif - char *prog, *cmd, *ppath = NULL; - -#if defined(UNIX) - /* - * Cscope reads from to_cs[0] and writes to from_cs[1]; vi reads from - * from_cs[0] and writes to to_cs[1]. - */ - to_cs[0] = to_cs[1] = from_cs[0] = from_cs[1] = -1; - if (pipe(to_cs) < 0 || pipe(from_cs) < 0) { - (void)emsg(_("E566: Could not create cscope pipes")); -err_closing: - if (to_cs[0] != -1) { - (void)close(to_cs[0]); - } - if (to_cs[1] != -1) { - (void)close(to_cs[1]); - } - if (from_cs[0] != -1) { - (void)close(from_cs[0]); - } - if (from_cs[1] != -1) { - (void)close(from_cs[1]); - } - return CSCOPE_FAILURE; - } - - switch (csinfo[i].pid = fork()) { - case -1: - (void)emsg(_("E622: Could not fork for cscope")); - goto err_closing; - case 0: // child: run cscope. - if (dup2(to_cs[0], STDIN_FILENO) == -1) { - PERROR("cs_create_connection 1"); - } - if (dup2(from_cs[1], STDOUT_FILENO) == -1) { - PERROR("cs_create_connection 2"); - } - if (dup2(from_cs[1], STDERR_FILENO) == -1) { - PERROR("cs_create_connection 3"); - } - - // close unused - (void)close(to_cs[1]); - (void)close(from_cs[0]); -#else - // Create pipes to communicate with cscope - int fd; - SECURITY_ATTRIBUTES sa; - PROCESS_INFORMATION pi; - BOOL pipe_stdin = FALSE, pipe_stdout = FALSE; // NOLINT(readability/bool) - STARTUPINFO si; - HANDLE stdin_rd, stdout_rd; - HANDLE stdout_wr, stdin_wr; - BOOL created; - - sa.nLength = sizeof(SECURITY_ATTRIBUTES); - sa.bInheritHandle = TRUE; - sa.lpSecurityDescriptor = NULL; - - if (!(pipe_stdin = CreatePipe(&stdin_rd, &stdin_wr, &sa, 0)) - || !(pipe_stdout = CreatePipe(&stdout_rd, &stdout_wr, &sa, 0))) { - (void)emsg(_("E566: Could not create cscope pipes")); -err_closing: - if (pipe_stdin) { - CloseHandle(stdin_rd); - CloseHandle(stdin_wr); - } - if (pipe_stdout) { - CloseHandle(stdout_rd); - CloseHandle(stdout_wr); - } - return CSCOPE_FAILURE; - } -#endif - // expand the cscope exec for env var's - prog = xmalloc(MAXPATHL + 1); - expand_env(p_csprg, (char_u *)prog, MAXPATHL); - - // alloc space to hold the cscope command - size_t len = strlen(prog) + strlen(csinfo[i].fname) + 32; - if (csinfo[i].ppath) { - // expand the prepend path for env var's - ppath = xmalloc(MAXPATHL + 1); - expand_env((char_u *)csinfo[i].ppath, (char_u *)ppath, MAXPATHL); - - len += strlen(ppath); - } - - if (csinfo[i].flags) { - len += strlen(csinfo[i].flags); - } - - cmd = xmalloc(len); - - // run the cscope command; is there execl for non-unix systems? -#if defined(UNIX) - (void)snprintf(cmd, len, "exec %s -dl -f %s", prog, csinfo[i].fname); -#else - // WIN32 - (void)snprintf(cmd, len, "%s -dl -f %s", prog, csinfo[i].fname); -#endif - if (csinfo[i].ppath != NULL) { - (void)strcat(cmd, " -P"); - (void)strcat(cmd, csinfo[i].ppath); - } - if (csinfo[i].flags != NULL) { - (void)strcat(cmd, " "); - (void)strcat(cmd, csinfo[i].flags); - } -#ifdef UNIX - // on Win32 we still need prog - xfree(prog); -#endif - xfree(ppath); - -#if defined(UNIX) -# if defined(HAVE_SETSID) || defined(HAVE_SETPGID) - // Change our process group to avoid cscope receiving SIGWINCH. -# if defined(HAVE_SETSID) - (void)setsid(); -# else - if (setpgid(0, 0) == -1) { - PERROR(_("cs_create_connection setpgid failed")); - } -# endif -# endif - if (execl("/bin/sh", "sh", "-c", cmd, (char *)NULL) == -1) { - PERROR(_("cs_create_connection exec failed")); - } - - exit(127); - // NOTREACHED - default: // parent. - // Save the file descriptors for later duplication, and - // reopen as streams. - if ((csinfo[i].to_fp = fdopen(to_cs[1], "w")) == NULL) { - PERROR(_("cs_create_connection: fdopen for to_fp failed")); - } - if ((csinfo[i].fr_fp = fdopen(from_cs[0], "r")) == NULL) { - PERROR(_("cs_create_connection: fdopen for fr_fp failed")); - } - - // close unused - (void)close(to_cs[0]); - (void)close(from_cs[1]); - - break; - } - -#else - // WIN32 - // Create a new process to run cscope and use pipes to talk with it - GetStartupInfo(&si); - si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; // Hide child application window - si.hStdOutput = stdout_wr; - si.hStdError = stdout_wr; - si.hStdInput = stdin_rd; - created = CreateProcess(NULL, cmd, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, - NULL, NULL, &si, &pi); - xfree(prog); - xfree(cmd); - - if (!created) { - PERROR(_("cs_create_connection exec failed")); - (void)emsg(_("E623: Could not spawn cscope process")); - goto err_closing; - } - // else - csinfo[i].pid = pi.dwProcessId; - csinfo[i].hProc = pi.hProcess; - CloseHandle(pi.hThread); - - // TODO(neovim): tidy up after failure to create files on pipe handles. - if (((fd = _open_osfhandle((intptr_t)stdin_wr, _O_TEXT|_O_APPEND)) < 0) - || ((csinfo[i].to_fp = _fdopen(fd, "w")) == NULL)) { - PERROR(_("cs_create_connection: fdopen for to_fp failed")); - } - if (((fd = _open_osfhandle((intptr_t)stdout_rd, _O_TEXT|_O_RDONLY)) < 0) - || ((csinfo[i].fr_fp = _fdopen(fd, "r")) == NULL)) { - PERROR(_("cs_create_connection: fdopen for fr_fp failed")); - } - // Close handles for file descriptors inherited by the cscope process. - CloseHandle(stdin_rd); - CloseHandle(stdout_wr); - -#endif // !UNIX - - return CSCOPE_SUCCESS; -} - -/// Query cscope using command line interface. Parse the output and use tselect -/// to allow choices. Like Nvi, creates a pipe to send to/from query/cscope. -/// -/// @return TRUE if we jump to a tag or abort, FALSE if not. -static int cs_find(exarg_T *eap) -{ - char *opt, *pat; - - if (cs_check_for_connections() == false) { - (void)emsg(_("E567: no cscope connections")); - return false; - } - - if ((opt = strtok((char *)NULL, (const char *)" ")) == NULL) { - cs_usage_msg(Find); - return false; - } - - pat = opt + strlen(opt) + 1; - if (pat >= eap->arg + eap_arg_len) { - cs_usage_msg(Find); - return false; - } - - /* - * Let's replace the NULs written by strtok() with spaces - we need the - * spaces to correctly display the quickfix/location list window's title. - */ - for (int i = 0; i < eap_arg_len; ++i) { - if (NUL == eap->arg[i]) { - eap->arg[i] = ' '; - } - } - - return cs_find_common(opt, pat, eap->forceit, true, - eap->cmdidx == CMD_lcscope, (char_u *)(*eap->cmdlinep)); -} - -/// Common code for cscope find, shared by cs_find() and ex_cstag(). -static bool cs_find_common(char *opt, char *pat, int forceit, int verbose, bool use_ll, - char_u *cmdline) -{ - char *cmd; - int *nummatches; - size_t totmatches; - char cmdletter; - char *qfpos; - - // get cmd letter - switch (opt[0]) { - case '0': - cmdletter = 's'; - break; - case '1': - cmdletter = 'g'; - break; - case '2': - cmdletter = 'd'; - break; - case '3': - cmdletter = 'c'; - break; - case '4': - cmdletter = 't'; - break; - case '6': - cmdletter = 'e'; - break; - case '7': - cmdletter = 'f'; - break; - case '8': - cmdletter = 'i'; - break; - case '9': - cmdletter = 'a'; - break; - default: - cmdletter = opt[0]; - } - - qfpos = vim_strchr((char *)p_csqf, cmdletter); - if (qfpos != NULL) { - qfpos++; - // next symbol must be + or - - if (strchr(CSQF_FLAGS, *qfpos) == NULL) { - (void)semsg(_("E469: invalid cscopequickfix flag %c for %c"), *qfpos, *(qfpos - 1)); - return false; - } - - if (*qfpos != '0' - && apply_autocmds(EVENT_QUICKFIXCMDPRE, "cscope", curbuf->b_fname, true, curbuf)) { - if (aborting()) { - return false; - } - } - } - - // create the actual command to send to cscope - cmd = cs_create_cmd(opt, pat); - if (cmd == NULL) { - return false; - } - - nummatches = xmalloc(sizeof(int) * csinfo_size); - - // Send query to all open connections, then count the total number - // of matches so we can alloc all in one swell foop. - for (size_t i = 0; i < csinfo_size; i++) { - nummatches[i] = 0; - } - totmatches = 0; - for (size_t i = 0; i < csinfo_size; i++) { - if (csinfo[i].fname == NULL || csinfo[i].to_fp == NULL) { - continue; - } - - // send cmd to cscope - (void)fprintf(csinfo[i].to_fp, "%s\n", cmd); - (void)fflush(csinfo[i].to_fp); - - nummatches[i] = cs_cnt_matches(i); - - if (nummatches[i] > -1) { - totmatches += (size_t)nummatches[i]; - } - - if (nummatches[i] == 0) { - (void)cs_read_prompt(i); - } - } - xfree(cmd); - - if (totmatches == 0) { - if (verbose) { - (void)semsg(_("E259: no matches found for cscope query %s of %s"), opt, pat); - } - xfree(nummatches); - return false; - } - - if (qfpos != NULL && *qfpos != '0') { - // Fill error list. - FILE *f; - char_u *tmp = vim_tempname(); - qf_info_T *qi = NULL; - win_T *wp = NULL; - - f = os_fopen((char *)tmp, "w"); - if (f == NULL) { - semsg(_(e_notopen), tmp); - } else { - cs_file_results(f, nummatches); - fclose(f); - if (use_ll) { // Use location list - wp = curwin; - } - // '-' starts a new error list - if (qf_init(wp, (char *)tmp, "%f%*\\t%l%*\\t%m", - *qfpos == '-', (char *)cmdline, NULL) > 0) { - if (postponed_split != 0) { - (void)win_split(postponed_split > 0 ? postponed_split : 0, - postponed_split_flags); - RESET_BINDING(curwin); - postponed_split = 0; - } - - apply_autocmds(EVENT_QUICKFIXCMDPOST, "cscope", curbuf->b_fname, true, curbuf); - if (use_ll) { - /* - * In the location list window, use the displayed location - * list. Otherwise, use the location list for the window. - */ - qi = (bt_quickfix(wp->w_buffer) && wp->w_llist_ref != NULL) - ? wp->w_llist_ref : wp->w_llist; - } - qf_jump(qi, 0, 0, forceit); - } - } - os_remove((char *)tmp); - xfree(tmp); - xfree(nummatches); - return true; - } else { - char **matches = NULL, **contexts = NULL; - size_t matched = 0; - - // read output - cs_fill_results(pat, totmatches, nummatches, &matches, &contexts, &matched); - xfree(nummatches); - if (matches == NULL) { - return false; - } - - (void)cs_manage_matches(matches, contexts, matched, Store); - - return do_tag((char_u *)pat, DT_CSCOPE, 0, forceit, verbose); - } -} - -/// Print help. -static int cs_help(exarg_T *eap) -{ - cscmd_T *cmdp = cs_cmds; - - (void)msg_puts(_("cscope commands:\n")); - while (cmdp->name != NULL) { - char *help = _(cmdp->help); - int space_cnt = 30 - vim_strsize(help); - - // Use %*s rather than %30s to ensure proper alignment in utf-8 - if (space_cnt < 0) { - space_cnt = 0; - } - (void)smsg(_("%-5s: %s%*s (Usage: %s)"), - cmdp->name, - help, space_cnt, " ", - cmdp->usage); - if (strcmp(cmdp->name, "find") == 0) { - msg_puts(_("\n" - " a: Find assignments to this symbol\n" - " c: Find functions calling this function\n" - " d: Find functions called by this function\n" - " e: Find this egrep pattern\n" - " f: Find this file\n" - " g: Find this definition\n" - " i: Find files #including this file\n" - " s: Find this C symbol\n" - " t: Find this text string\n")); - } - - cmdp++; - } - - wait_return(TRUE); - return CSCOPE_SUCCESS; -} - -static void clear_csinfo(size_t i) -{ - csinfo[i].fname = NULL; - csinfo[i].ppath = NULL; - csinfo[i].flags = NULL; - csinfo[i].file_id = FILE_ID_EMPTY; - csinfo[i].pid = 0; - csinfo[i].fr_fp = NULL; - csinfo[i].to_fp = NULL; -} - -/// Insert a new cscope database filename into the filelist. -static int cs_insert_filelist(char *fname, char *ppath, char *flags, FileInfo *file_info) -{ - size_t i = 0; - bool empty_found = false; - - for (size_t j = 0; j < csinfo_size; j++) { - if (csinfo[j].fname != NULL - && os_fileid_equal_fileinfo(&(csinfo[j].file_id), file_info)) { - if (p_csverbose) { - (void)emsg(_("E568: duplicate cscope database not added")); - } - return CSCOPE_FAILURE; - } - - if (csinfo[j].fname == NULL && !empty_found) { - i = j; // remember first empty entry - empty_found = true; - } - } - - if (!empty_found) { - i = csinfo_size; - if (csinfo_size == 0) { - // First time allocation: allocate only 1 connection. It should - // be enough for most users. If more is needed, csinfo will be - // reallocated. - csinfo_size = 1; - csinfo = xcalloc(1, sizeof(csinfo_T)); - } else { - // Reallocate space for more connections. - csinfo_size *= 2; - csinfo = xrealloc(csinfo, sizeof(csinfo_T)*csinfo_size); - } - for (size_t j = csinfo_size/2; j < csinfo_size; j++) { - clear_csinfo(j); - } - } - - csinfo[i].fname = xmalloc(strlen(fname) + 1); - - (void)strcpy(csinfo[i].fname, (const char *)fname); - - if (ppath != NULL) { - csinfo[i].ppath = xmalloc(strlen(ppath) + 1); - (void)strcpy(csinfo[i].ppath, (const char *)ppath); - } else { - csinfo[i].ppath = NULL; - } - - if (flags != NULL) { - csinfo[i].flags = xmalloc(strlen(flags) + 1); - (void)strcpy(csinfo[i].flags, (const char *)flags); - } else { - csinfo[i].flags = NULL; - } - - os_fileinfo_id(file_info, &(csinfo[i].file_id)); - assert(i <= INT_MAX); - return (int)i; -} - -/// Find cscope command in command table. -static cscmd_T *cs_lookup_cmd(exarg_T *eap) -{ - cscmd_T *cmdp; - char *stok; - size_t len; - - if (eap->arg == NULL) { - return NULL; - } - - // Store length of eap->arg before it gets modified by strtok(). - eap_arg_len = (int)STRLEN(eap->arg); - - if ((stok = strtok(eap->arg, (const char *)" ")) == NULL) { // NOLINT(runtime/threadsafe_fn) - return NULL; - } - - len = strlen(stok); - for (cmdp = cs_cmds; cmdp->name != NULL; cmdp++) { - if (strncmp(stok, cmdp->name, len) == 0) { - return cmdp; - } - } - return NULL; -} - -/// Nuke em. -static int cs_kill(exarg_T *eap) -{ - char *stok; - int num; - size_t i = 0; - bool killall = false; - - if ((stok = strtok((char *)NULL, (const char *)" ")) == NULL) { - cs_usage_msg(Kill); - return CSCOPE_FAILURE; - } - - // Check if string is a number, only single digit - // positive and negative integers are allowed - if ((strlen(stok) < 2 && ascii_isdigit((int)(stok[0]))) - || (strlen(stok) < 3 && stok[0] == '-' - && ascii_isdigit((int)(stok[1])))) { - num = atoi(stok); - if (num == -1) { - killall = true; - } else if (num >= 0) { - i = (size_t)num; - } else { // All negative values besides -1 are invalid. - if (p_csverbose) { - (void)semsg(_("E261: cscope connection %s not found"), stok); - } - return CSCOPE_FAILURE; - } - } else { - // Else it must be part of a name. We will try to find a match - // within all the names in the csinfo data structure - for (i = 0; i < csinfo_size; i++) { - if (csinfo[i].fname != NULL && strstr(csinfo[i].fname, stok)) { - break; - } - } - } - - if (!killall && (i >= csinfo_size || csinfo[i].fname == NULL)) { - if (p_csverbose) { - (void)semsg(_("E261: cscope connection %s not found"), stok); - } - return CSCOPE_FAILURE; - } else { - if (killall) { - for (i = 0; i < csinfo_size; i++) { - if (csinfo[i].fname) { - cs_kill_execute(i, csinfo[i].fname); - } - } - } else { - cs_kill_execute(i, stok); - } - } - - return CSCOPE_SUCCESS; -} - -/// Actually kills a specific cscope connection. -/// -/// @param i cscope table index -/// @param cname cscope database name -static void cs_kill_execute(size_t i, char *cname) -{ - if (p_csverbose) { - msg_clr_eos(); - (void)smsg_attr(HL_ATTR(HLF_R) | MSG_HIST, - _("cscope connection %s closed"), cname); - } - cs_release_csp(i, TRUE); -} - -/// Convert the cscope output into a ctags style entry (as might be found -/// in a ctags tags file). there's one catch though: cscope doesn't tell you -/// the type of the tag you are looking for. for example, in Darren Hiebert's -/// ctags (the one that comes with vim), #define's use a line number to find the -/// tag in a file while function definitions use a regexp search pattern. -/// -/// I'm going to always use the line number because cscope does something -/// quirky (and probably other things i don't know about): -/// -/// if you have "# define" in your source file, which is -/// perfectly legal, cscope thinks you have "#define". this -/// will result in a failed regexp search. :( -/// -/// Besides, even if this particular case didn't happen, the search pattern -/// would still have to be modified to escape all the special regular expression -/// characters to comply with ctags formatting. -static char *cs_make_vim_style_matches(char *fname, char *slno, char *search, char *tagstr) -{ - // vim style is ctags: - // - // <tagstr>\t<filename>\t<linenum_or_search>"\t<extra> - // - // but as mentioned above, we'll always use the line number and - // put the search pattern (if one exists) as "extra" - // - // buf is used as part of vim's method of handling tags, and - // (i think) vim frees it when you pop your tags and get replaced - // by new ones on the tag stack. - char *buf; - size_t amt; - - if (search != NULL) { - amt = strlen(fname) + strlen(slno) + strlen(tagstr) + strlen(search) + 6; - buf = xmalloc(amt); - - (void)sprintf(buf, "%s\t%s\t%s;\"\t%s", tagstr, fname, slno, search); - } else { - amt = strlen(fname) + strlen(slno) + strlen(tagstr) + 5; - buf = xmalloc(amt); - - (void)sprintf(buf, "%s\t%s\t%s;\"", tagstr, fname, slno); - } - - return buf; -} - -/// This is kind of hokey, but i don't see an easy way round this. -/// -/// Store: keep a ptr to the (malloc'd) memory of matches originally -/// generated from cs_find(). the matches are originally lines directly -/// from cscope output, but transformed to look like something out of a -/// ctags. see cs_make_vim_style_matches for more details. -/// -/// Get: used only from cs_fgets(), this simulates a vim_fgets() to return -/// the next line from the cscope output. it basically keeps track of which -/// lines have been "used" and returns the next one. -/// -/// Free: frees up everything and resets -/// -/// Print: prints the tags -static char *cs_manage_matches(char **matches, char **contexts, size_t totmatches, mcmd_e cmd) -{ - static char **mp = NULL; - static char **cp = NULL; - static size_t cnt = 0; - static size_t next = 0; - char *p = NULL; - - switch (cmd) { - case Store: - assert(matches != NULL); - assert(totmatches > 0); - if (mp != NULL || cp != NULL) { - (void)cs_manage_matches(NULL, NULL, 0, Free); - } - mp = matches; - cp = contexts; - cnt = totmatches; - next = 0; - break; - case Get: - if (next >= cnt) { - return NULL; - } - - p = mp[next]; - next++; - break; - case Free: - if (mp != NULL) { - while (cnt--) { - xfree(mp[cnt]); - if (cp != NULL) { - xfree(cp[cnt]); - } - } - xfree(mp); - xfree(cp); - } - mp = NULL; - cp = NULL; - cnt = 0; - next = 0; - break; - case Print: - assert(mp != NULL); - assert(cp != NULL); - cs_print_tags_priv(mp, cp, cnt); - break; - default: // should not reach here - iemsg(_("E570: fatal error in cs_manage_matches")); - return NULL; - } - - return p; -} - -/// Parse cscope output. -static char *cs_parse_results(size_t cnumber, char *buf, int bufsize, char **context, - char **linenumber, char **search) -{ - int ch; - char *p; - char *name; - -retry: - errno = 0; - if (fgets(buf, bufsize, csinfo[cnumber].fr_fp) == NULL) { - if (errno == EINTR) { - goto retry; - } - - if (feof(csinfo[cnumber].fr_fp)) { - errno = EIO; - } - - cs_reading_emsg(cnumber); - - return NULL; - } - - // If the line's too long for the buffer, discard it. - if ((p = strchr(buf, '\n')) == NULL) { - while ((ch = getc(csinfo[cnumber].fr_fp)) != EOF && ch != '\n') {} - return NULL; - } - *p = '\0'; - - /* - * cscope output is in the following format: - * - * <filename> <context> <line number> <pattern> - */ - char *saveptr = NULL; - if ((name = os_strtok(buf, (const char *)" ", &saveptr)) == NULL) { - return NULL; - } - if ((*context = os_strtok(NULL, (const char *)" ", &saveptr)) == NULL) { - return NULL; - } - if ((*linenumber = os_strtok(NULL, (const char *)" ", &saveptr)) == NULL) { - return NULL; - } - *search = *linenumber + strlen(*linenumber) + 1; // +1 to skip \0 - - // --- nvi --- - // If the file is older than the cscope database, that is, - // the database was built since the file was last modified, - // or there wasn't a search string, use the line number. - if (strcmp(*search, "<unknown>") == 0) { - *search = NULL; - } - - name = cs_resolve_file(cnumber, name); - return name; -} - -/// Write cscope find results to file. -static void cs_file_results(FILE *f, int *nummatches_a) -{ - char *search, *slno; - char *fullname; - char *cntx; - char *context; - - char *buf = xmalloc(CSREAD_BUFSIZE); - - for (size_t i = 0; i < csinfo_size; i++) { - if (nummatches_a[i] < 1) { - continue; - } - - for (int j = 0; j < nummatches_a[i]; j++) { - if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, - &slno, &search)) == NULL) { - continue; - } - - size_t context_len = strlen(cntx) + 5; - context = xmalloc(context_len); - - if (strcmp(cntx, "<global>") == 0) { - xstrlcpy(context, "<<global>>", context_len); - } else { - snprintf(context, context_len, "<<%s>>", cntx); - } - - if (search == NULL) { - fprintf(f, "%s\t%s\t%s\n", fullname, slno, context); - } else { - fprintf(f, "%s\t%s\t%s %s\n", fullname, slno, context, search); - } - - xfree(context); - xfree(fullname); - } // for all matches - - (void)cs_read_prompt(i); - } // for all cscope connections - xfree(buf); -} - -/// Get parsed cscope output and calls cs_make_vim_style_matches to convert -/// into ctags format. -/// When there are no matches sets "*matches_p" to NULL. -static void cs_fill_results(char *tagstr, size_t totmatches, int *nummatches_a, char ***matches_p, - char ***cntxts_p, size_t *matched) -{ - char *buf; - char *search, *slno; - size_t totsofar = 0; - char **matches = NULL; - char **cntxts = NULL; - char *fullname; - char *cntx; - - assert(totmatches > 0); - - buf = xmalloc(CSREAD_BUFSIZE); - matches = xmalloc(sizeof(char *) * totmatches); - cntxts = xmalloc(sizeof(char *) * totmatches); - - for (size_t i = 0; i < csinfo_size; i++) { - if (nummatches_a[i] < 1) { - continue; - } - - for (int j = 0; j < nummatches_a[i]; j++) { - if ((fullname = cs_parse_results(i, buf, CSREAD_BUFSIZE, &cntx, - &slno, &search)) == NULL) { - continue; - } - - matches[totsofar] = cs_make_vim_style_matches(fullname, slno, search, - tagstr); - - xfree(fullname); - - if (strcmp(cntx, "<global>") == 0) { - cntxts[totsofar] = NULL; - } else { - cntxts[totsofar] = xstrdup(cntx); - } - - totsofar++; - } // for all matches - - (void)cs_read_prompt(i); - } // for all cscope connections - - if (totsofar == 0) { - // No matches, free the arrays and return NULL in "*matches_p". - XFREE_CLEAR(matches); - XFREE_CLEAR(cntxts); - } - *matched = totsofar; - *matches_p = matches; - *cntxts_p = cntxts; - - xfree(buf); -} - -// get the requested path components -static char *cs_pathcomponents(char *path) -{ - if (p_cspc == 0) { - return path; - } - - char *s = path + strlen(path) - 1; - for (int i = 0; i < p_cspc; i++) { - while (s > path && *--s != '/') {} - } - if ((s > path && *s == '/')) { - s++; - } - return s; -} - -/// Print cscope output that was converted into ctags style entries. -/// -/// Only called from cs_manage_matches(). -/// -/// @param matches Array of cscope lines in ctags style. Every entry was -// produced with a format string of the form -// "%s\t%s\t%s;\"\t%s" or -// "%s\t%s\t%s;\"" -// by cs_make_vim_style_matches(). -/// @param cntxts Context for matches. -/// @param num_matches Number of entries in matches/cntxts, always greater 0. -static void cs_print_tags_priv(char **matches, char **cntxts, - size_t num_matches) FUNC_ATTR_NONNULL_ALL -{ - char *globalcntx = "GLOBAL"; - char *cstag_msg = _("Cscope tag: %s"); - - assert(num_matches > 0); - assert(strcnt(matches[0], '\t') >= 2); - - char *ptag = matches[0]; - char *ptag_end = strchr(ptag, '\t'); - assert(ptag_end >= ptag); - // NUL terminate tag string in matches[0]. - *ptag_end = NUL; - - // The "%s" in cstag_msg won't appear in the result string, so we don't need - // extra memory for terminating NUL. - size_t newsize = strlen(cstag_msg) + (size_t)(ptag_end - ptag); - char *buf = xmalloc(newsize); - size_t bufsize = newsize; // Track available bufsize - (void)snprintf(buf, bufsize, cstag_msg, ptag); - msg_puts_attr(buf, HL_ATTR(HLF_T)); - msg_clr_eos(); - - // restore matches[0] - *ptag_end = '\t'; - - // Column headers for match number, line number and filename. - msg_puts_attr(_("\n # line"), HL_ATTR(HLF_T)); - msg_advance(msg_col + 2); - msg_puts_attr(_("filename / context / line\n"), HL_ATTR(HLF_T)); - - for (size_t i = 0; i < num_matches; i++) { - assert(strcnt(matches[i], '\t') >= 2); - - // Parse filename, line number and optional part. - char *fname = strchr(matches[i], '\t') + 1; - char *fname_end = strchr(fname, '\t'); - // Replace second '\t' in matches[i] with NUL to terminate fname. - *fname_end = NUL; - - char *lno = fname_end + 1; - char *extra = xstrchrnul(lno, '\t'); - // Ignore ;" at the end of lno. - char *lno_end = extra - 2; - *lno_end = NUL; - // Do we have an optional part? - extra = *extra ? extra + 1 : NULL; - - const char *csfmt_str = "%4zu %6s "; - // hopefully num_matches will be less than 10^16 - newsize = strlen(csfmt_str) + 16 + (size_t)(lno_end - lno); - if (bufsize < newsize) { - buf = xrealloc(buf, newsize); - bufsize = newsize; - } - (void)snprintf(buf, bufsize, csfmt_str, i + 1, lno); - msg_puts_attr(buf, HL_ATTR(HLF_CM)); - msg_outtrans_long_attr((char_u *)cs_pathcomponents(fname), HL_ATTR(HLF_CM)); - - // compute the required space for the context - char *context = cntxts[i] ? cntxts[i] : globalcntx; - - const char *cntxformat = " <<%s>>"; - // '%s' won't appear in result string, so: - // newsize = len(cntxformat) - 2 + len(context) + 1 (for NUL). - newsize = strlen(context) + strlen(cntxformat) - 1; - - if (bufsize < newsize) { - buf = xrealloc(buf, newsize); - bufsize = newsize; - } - int buf_len = snprintf(buf, bufsize, cntxformat, context); - assert(buf_len >= 0); - - // Print the context only if it fits on the same line. - if (msg_col + buf_len >= Columns) { - msg_putchar('\n'); - } - msg_advance(12); - msg_outtrans_long_attr((char_u *)buf, 0); - msg_putchar('\n'); - if (extra != NULL) { - msg_advance(13); - msg_outtrans_long_attr((char_u *)extra, 0); - } - - // restore matches[i] - *fname_end = '\t'; - *lno_end = ';'; - - if (msg_col) { - msg_putchar('\n'); - } - - os_breakcheck(); - if (got_int) { - got_int = false; // don't print any more matches - break; - } - } - - xfree(buf); -} - -/// Read a cscope prompt (basically, skip over the ">> "). -static int cs_read_prompt(size_t i) -{ - int ch; - char *buf = NULL; // buffer for possible error message from cscope - size_t bufpos = 0; - char *cs_emsg = _("E609: Cscope error: %s"); - size_t cs_emsg_len = strlen(cs_emsg); - static char *eprompt = "Press the RETURN key to continue:"; - size_t epromptlen = strlen(eprompt); - - // compute maximum allowed len for Cscope error message - assert(IOSIZE >= cs_emsg_len); - size_t maxlen = IOSIZE - cs_emsg_len; - - while (1) { - while (1) { - do { - errno = 0; - ch = fgetc(csinfo[i].fr_fp); - } while (ch == EOF && errno == EINTR && ferror(csinfo[i].fr_fp)); - if (ch == EOF || ch == CSCOPE_PROMPT[0]) { - break; - } - // if there is room and char is printable - if (bufpos < maxlen - 1 && vim_isprintc(ch)) { - // lazy buffer allocation - if (buf == NULL) { - buf = xmalloc(maxlen); - } - // append character to the message - buf[bufpos++] = (char)ch; - buf[bufpos] = NUL; - if (bufpos >= epromptlen - && strcmp(&buf[bufpos - epromptlen], eprompt) == 0) { - // remove eprompt from buf - buf[bufpos - epromptlen] = NUL; - - // print message to user - (void)semsg(cs_emsg, buf); - - // send RETURN to cscope - (void)putc('\n', csinfo[i].to_fp); - (void)fflush(csinfo[i].to_fp); - - // clear buf - bufpos = 0; - buf[bufpos] = NUL; - } - } - } - - for (size_t n = 0; n < strlen(CSCOPE_PROMPT); n++) { - if (n > 0) { - do { - errno = 0; - ch = fgetc(csinfo[i].fr_fp); - } while (ch == EOF && errno == EINTR && ferror(csinfo[i].fr_fp)); - } - if (ch == EOF) { - PERROR("cs_read_prompt EOF"); - if (buf != NULL && buf[0] != NUL) { - (void)semsg(cs_emsg, buf); - } else if (p_csverbose) { - cs_reading_emsg(i); // don't have additional information - } - cs_release_csp(i, true); - xfree(buf); - return CSCOPE_FAILURE; - } - - if (ch != CSCOPE_PROMPT[n]) { - ch = EOF; - break; - } - } - - if (ch == EOF) { - continue; // didn't find the prompt - } - break; // did find the prompt - } - - xfree(buf); - return CSCOPE_SUCCESS; -} - -#if defined(UNIX) && defined(SIGALRM) -/* - * Used to catch and ignore SIGALRM below. - */ -static void sig_handler(int s) -{ - // do nothing -} - -#endif - -/// Does the actual free'ing for the cs ptr with an optional flag of whether -/// or not to free the filename. Called by cs_kill and cs_reset. -static void cs_release_csp(size_t i, bool freefnpp) -{ - // Trying to exit normally (not sure whether it is fit to Unix cscope) - if (csinfo[i].to_fp != NULL) { - (void)fputs("q\n", csinfo[i].to_fp); - (void)fflush(csinfo[i].to_fp); - } -#if defined(UNIX) - { - int waitpid_errno; - int pstat; - pid_t pid; - -# if defined(HAVE_SIGACTION) - struct sigaction sa, old; - - // Use sigaction() to limit the waiting time to two seconds. - sigemptyset(&sa.sa_mask); - sa.sa_handler = sig_handler; -# ifdef SA_NODEFER - sa.sa_flags = SA_NODEFER; -# else - sa.sa_flags = 0; -# endif - sigaction(SIGALRM, &sa, &old); - alarm(2); // 2 sec timeout - - // Block until cscope exits or until timer expires - pid = waitpid(csinfo[i].pid, &pstat, 0); - waitpid_errno = errno; - - // cancel pending alarm if still there and restore signal - alarm(0); - sigaction(SIGALRM, &old, NULL); -# else - int waited; - - // Can't use sigaction(), loop for two seconds. First yield the CPU - // to give cscope a chance to exit quickly. - sleep(0); - for (waited = 0; waited < 40; ++waited) { - pid = waitpid(csinfo[i].pid, &pstat, WNOHANG); - waitpid_errno = errno; - if (pid != 0) { - break; // break unless the process is still running - } - os_delay(50L, false); // sleep 50 ms - } -# endif - /* - * If the cscope process is still running: kill it. - * Safety check: If the PID would be zero here, the entire X session - * would be killed. -1 and 1 are dangerous as well. - */ - if (pid < 0 && csinfo[i].pid > 1) { -# ifdef ECHILD - bool alive = true; - - if (waitpid_errno == ECHILD) { - /* - * When using 'vim -g', vim is forked and cscope process is - * no longer a child process but a sibling. So waitpid() - * fails with errno being ECHILD (No child processes). - * Don't send SIGKILL to cscope immediately but wait - * (polling) for it to exit normally as result of sending - * the "q" command, hence giving it a chance to clean up - * its temporary files. - */ - int waited; - - sleep(0); - for (waited = 0; waited < 40; waited++) { - // Check whether cscope process is still alive - if (kill(csinfo[i].pid, 0) != 0) { - alive = false; // cscope process no longer exists - break; - } - os_delay(50L, false); // sleep 50 ms - } - } - if (alive) -# endif - { - kill(csinfo[i].pid, SIGKILL); - (void)waitpid(csinfo[i].pid, &pstat, 0); - } - } - } -#else // !UNIX - if (csinfo[i].hProc != NULL) { - // Give cscope a chance to exit normally - if (WaitForSingleObject(csinfo[i].hProc, 1000) == WAIT_TIMEOUT) { - TerminateProcess(csinfo[i].hProc, 0); - } - CloseHandle(csinfo[i].hProc); - } -#endif - - if (csinfo[i].fr_fp != NULL) { - (void)fclose(csinfo[i].fr_fp); - } - if (csinfo[i].to_fp != NULL) { - (void)fclose(csinfo[i].to_fp); - } - - if (freefnpp) { - xfree(csinfo[i].fname); - xfree(csinfo[i].ppath); - xfree(csinfo[i].flags); - } - - clear_csinfo(i); -} - -/// Calls cs_kill on all cscope connections then reinits. -static int cs_reset(exarg_T *eap) -{ - char **dblist = NULL, **pplist = NULL, **fllist = NULL; - char buf[25]; // for snprintf " (#%zu)" - - if (csinfo_size == 0) { - return CSCOPE_SUCCESS; - } - - // malloc our db and ppath list - dblist = xmalloc(csinfo_size * sizeof(char *)); - pplist = xmalloc(csinfo_size * sizeof(char *)); - fllist = xmalloc(csinfo_size * sizeof(char *)); - - for (size_t i = 0; i < csinfo_size; i++) { - dblist[i] = csinfo[i].fname; - pplist[i] = csinfo[i].ppath; - fllist[i] = csinfo[i].flags; - if (csinfo[i].fname != NULL) { - cs_release_csp(i, FALSE); - } - } - - // rebuild the cscope connection list - for (size_t i = 0; i < csinfo_size; i++) { - if (dblist[i] != NULL) { - cs_add_common(dblist[i], pplist[i], fllist[i]); - if (p_csverbose) { - // don't use smsg_attr() because we want to display the - // connection number in the same line as - // "Added cscope database..." - snprintf(buf, ARRAY_SIZE(buf), " (#%zu)", i); - msg_puts_attr(buf, HL_ATTR(HLF_R)); - } - } - xfree(dblist[i]); - xfree(pplist[i]); - xfree(fllist[i]); - } - xfree(dblist); - xfree(pplist); - xfree(fllist); - - if (p_csverbose) { - msg_attr(_("All cscope databases reset"), HL_ATTR(HLF_R) | MSG_HIST); - } - return CSCOPE_SUCCESS; -} - -/// Construct the full pathname to a file found in the cscope database. -/// (Prepends ppath, if there is one and if it's not already prepended, -/// otherwise just uses the name found.) -/// -/// We need to prepend the prefix because on some cscope's (e.g., the one that -/// ships with Solaris 2.6), the output never has the prefix prepended. -/// Contrast this with my development system (Digital Unix), which does. -static char *cs_resolve_file(size_t i, char *name) -{ - char *fullname; - char_u *csdir = NULL; - - /* - * Ppath is freed when we destroy the cscope connection. - * Fullname is freed after cs_make_vim_style_matches, after it's been - * copied into the tag buffer used by Vim. - */ - size_t len = strlen(name) + 2; - if (csinfo[i].ppath != NULL) { - len += strlen(csinfo[i].ppath); - } else if (p_csre && csinfo[i].fname != NULL) { - // If 'cscoperelative' is set and ppath is not set, use cscope.out - // path in path resolution. - csdir = xmalloc(MAXPATHL); - STRLCPY(csdir, csinfo[i].fname, - path_tail(csinfo[i].fname) - - csinfo[i].fname + 1); - len += STRLEN(csdir); - } - - // Note/example: this won't work if the cscope output already starts - // "../.." and the prefix path is also "../..". if something like this - // happens, you are screwed up and need to fix how you're using cscope. - if (csinfo[i].ppath != NULL - && (strncmp(name, csinfo[i].ppath, strlen(csinfo[i].ppath)) != 0) - && (name[0] != '/')) { - fullname = xmalloc(len); - (void)sprintf(fullname, "%s/%s", csinfo[i].ppath, name); - } else if (csdir != NULL && csinfo[i].fname != NULL && *csdir != NUL) { - // Check for csdir to be non empty to avoid empty path concatenated to - // cscope output. - fullname = concat_fnames((char *)csdir, name, true); - } else { - fullname = xstrdup(name); - } - - xfree(csdir); - return fullname; -} - -/// Show all cscope connections. -static int cs_show(exarg_T *eap) -{ - if (cs_cnt_connections() == 0) { - msg_puts(_("no cscope connections\n")); - } else { - msg_puts_attr(_(" # pid database name prepend path\n"), - HL_ATTR(HLF_T)); - for (size_t i = 0; i < csinfo_size; i++) { - if (csinfo[i].fname == NULL) { - continue; - } - - if (csinfo[i].ppath != NULL) { - (void)smsg("%2zu %-5" PRId64 " %-34s %-32s", i, - (int64_t)csinfo[i].pid, csinfo[i].fname, csinfo[i].ppath); - } else { - (void)smsg("%2zu %-5" PRId64 " %-34s <none>", i, - (int64_t)csinfo[i].pid, csinfo[i].fname); - } - } - } - - wait_return(TRUE); - return CSCOPE_SUCCESS; -} - -/// Only called when VIM exits to quit any cscope sessions. -void cs_end(void) -{ - for (size_t i = 0; i < csinfo_size; i++) { - cs_release_csp(i, true); - } - xfree(csinfo); - csinfo_size = 0; -} - -// the end |