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-rw-r--r--src/nvim/if_cscope.c193
1 files changed, 93 insertions, 100 deletions
diff --git a/src/nvim/if_cscope.c b/src/nvim/if_cscope.c
index e5cbb58608..2f9ec0b3ff 100644
--- a/src/nvim/if_cscope.c
+++ b/src/nvim/if_cscope.c
@@ -4,14 +4,14 @@
*
* 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.
- *
- * See README.txt for an overview of the Vim source code.
*/
+
#include <stdbool.h>
#include <assert.h>
#include <errno.h>
#include <inttypes.h>
+#include <fcntl.h>
#include "nvim/vim.h"
#include "nvim/ascii.h"
@@ -27,7 +27,6 @@
#include "nvim/quickfix.h"
#include "nvim/strings.h"
#include "nvim/tag.h"
-#include "nvim/tempfile.h"
#include "nvim/window.h"
#include "nvim/os/os.h"
#include "nvim/os/input.h"
@@ -744,8 +743,16 @@ err_closing:
(void)close(to_cs[1]);
(void)close(from_cs[0]);
#else
- /* WIN32 */
- /* Create pipes to communicate with cscope */
+ // 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;
@@ -862,17 +869,16 @@ err_closing:
csinfo[i].hProc = pi.hProcess;
CloseHandle(pi.hThread);
- /* TODO - tidy up after failure to create files on pipe handles. */
- if (((fd = _open_osfhandle((OPEN_OH_ARGTYPE)stdin_wr,
- _O_TEXT|_O_APPEND)) < 0)
- || ((csinfo[i].to_fp = _fdopen(fd, "w")) == NULL))
+ // 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((OPEN_OH_ARGTYPE)stdout_rd,
- _O_TEXT|_O_RDONLY)) < 0)
- || ((csinfo[i].fr_fp = _fdopen(fd, "r")) == NULL))
+ }
+ 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 */
+ }
+ // Close handles for file descriptors inherited by the cscope process.
CloseHandle(stdin_rd);
CloseHandle(stdout_wr);
@@ -1056,8 +1062,8 @@ static int cs_find_common(char *opt, char *pat, int forceit, int verbose,
if (qf_init(wp, tmp, (char_u *)"%f%*\\t%l%*\\t%m",
*qfpos == '-', cmdline) > 0) {
if (postponed_split != 0) {
- win_split(postponed_split > 0 ? postponed_split : 0,
- postponed_split_flags);
+ (void)win_split(postponed_split > 0 ? postponed_split : 0,
+ postponed_split_flags);
RESET_BINDING(curwin);
postponed_split = 0;
}
@@ -1147,22 +1153,6 @@ static void clear_csinfo(size_t i)
csinfo[i].to_fp = NULL;
}
-#ifndef UNIX
-static char *GetWin32Error(void)
-{
- char *msg = NULL;
- FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM,
- NULL, GetLastError(), 0, (LPSTR)&msg, 0, NULL);
- if (msg != NULL) {
- /* remove trailing \r\n */
- char *pcrlf = strstr(msg, "\r\n");
- if (pcrlf != NULL)
- *pcrlf = '\0';
- }
- return msg;
-}
-#endif
-
/*
* PRIVATE: cs_insert_filelist
*
@@ -1641,77 +1631,79 @@ static char *cs_pathcomponents(char *path)
return s;
}
-/*
- * PRIVATE: cs_print_tags_priv
- *
- * called from cs_manage_matches()
- */
+/// 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)
+ size_t num_matches) FUNC_ATTR_NONNULL_ALL
{
- char *ptag;
- char *fname, *lno, *extra, *tbuf;
- size_t num;
- char *globalcntx = "GLOBAL";
- char *context;
- char *cstag_msg = _("Cscope tag: %s");
-
- assert (num_matches > 0);
+ char *globalcntx = "GLOBAL";
+ char *cstag_msg = _("Cscope tag: %s");
- tbuf = xmalloc(strlen(matches[0]) + 1);
+ assert(num_matches > 0);
+ assert(strcnt(matches[0], '\t') >= 2);
- strcpy(tbuf, matches[0]);
- ptag = strtok(tbuf, "\t");
+ char *ptag = matches[0];
+ char *ptag_end = strchr(ptag, '\t');
+ assert(ptag_end >= ptag);
+ // NUL terminate tag string in matches[0].
+ *ptag_end = NUL;
- size_t newsize = strlen(cstag_msg) + strlen(ptag);
+ // 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)sprintf(buf, cstag_msg, ptag);
+ (void)snprintf(buf, bufsize, cstag_msg, ptag);
MSG_PUTS_ATTR(buf, hl_attr(HLF_T));
+ msg_clr_eos();
- xfree(tbuf);
+ // restore matches[0]
+ *ptag_end = '\t';
- MSG_PUTS_ATTR(_("\n # line"), hl_attr(HLF_T)); /* strlen is 7 */
+ // 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));
- num = 1;
for (size_t i = 0; i < num_matches; i++) {
- size_t idx = i;
-
- /* if we really wanted to, we could avoid this malloc and strcpy
- * by parsing matches[i] on the fly and placing stuff into buf
- * directly, but that's too much of a hassle
- */
- tbuf = xmalloc(strlen(matches[idx]) + 1);
- (void)strcpy(tbuf, matches[idx]);
-
- if (strtok(tbuf, (const char *)"\t") == NULL)
- continue;
- if ((fname = strtok(NULL, (const char *)"\t")) == NULL)
- continue;
- if ((lno = strtok(NULL, (const char *)"\t")) == NULL)
- continue;
- extra = strtok(NULL, (const char *)"\t");
-
- lno[strlen(lno)-2] = '\0'; /* ignore ;" at the end */
+ 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' (num of matches) will be less than 10^16 */
- newsize = strlen(csfmt_str) + 16 + strlen(lno);
+ // 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)sprintf(buf, csfmt_str, num, lno);
+ (void)snprintf(buf, bufsize, csfmt_str, i + 1, lno);
MSG_PUTS_ATTR(buf, hl_attr(HLF_CM));
MSG_PUTS_LONG_ATTR(cs_pathcomponents(fname), hl_attr(HLF_CM));
- /* compute the required space for the context */
- if (cntxts[idx] != NULL)
- context = cntxts[idx];
- else
- context = globalcntx;
+ // 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:
@@ -1722,11 +1714,13 @@ static void cs_print_tags_priv(char **matches, char **cntxts,
buf = xrealloc(buf, newsize);
bufsize = newsize;
}
- (void)sprintf(buf, cntxformat, context);
+ 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 + (int)strlen(buf) >= (int)Columns)
+ // Print the context only if it fits on the same line.
+ if (msg_col + buf_len >= (int)Columns) {
msg_putchar('\n');
+ }
msg_advance(12);
MSG_PUTS_LONG(buf);
msg_putchar('\n');
@@ -1735,23 +1729,23 @@ static void cs_print_tags_priv(char **matches, char **cntxts,
MSG_PUTS_LONG(extra);
}
- xfree(tbuf); /* only after printing extra due to strtok use */
+ // restore matches[i]
+ *fname_end = '\t';
+ *lno_end = ';';
- if (msg_col)
+ if (msg_col) {
msg_putchar('\n');
+ }
os_breakcheck();
if (got_int) {
- got_int = FALSE; /* don't print any more matches */
+ got_int = false; // don't print any more matches
break;
}
-
- num++;
- } /* for all matches */
+ }
xfree(buf);
-} /* cs_print_tags_priv */
-
+}
/*
* PRIVATE: cs_read_prompt
@@ -1851,9 +1845,7 @@ static void sig_handler(int s) {
*/
static void cs_release_csp(size_t i, int freefnpp)
{
- /*
- * Trying to exit normally (not sure whether it is fit to UNIX cscope
- */
+ // 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);
@@ -2088,12 +2080,13 @@ static int cs_show(exarg_T *eap)
if (csinfo[i].fname == NULL)
continue;
- if (csinfo[i].ppath != NULL)
- (void)smsg("%2zu %-5" PRId64 " %-34s %-32s",
- i, (long)csinfo[i].pid, csinfo[i].fname, csinfo[i].ppath);
- else
- (void)smsg("%2zu %-5" PRId64 " %-34s <none>",
- i, (long)csinfo[i].pid, csinfo[i].fname);
+ 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);
+ }
}
}
generated by cgit (git 2.34.1) at 2025-07-23 17:25:24 +0000