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-rw-r--r--src/nvim/strings.c140
1 files changed, 80 insertions, 60 deletions
diff --git a/src/nvim/strings.c b/src/nvim/strings.c
index 6c69b3b34a..d862b0b4dc 100644
--- a/src/nvim/strings.c
+++ b/src/nvim/strings.c
@@ -49,7 +49,8 @@
/*
* Copy "string" into newly allocated memory.
*/
-char_u *vim_strsave(char_u *string) FUNC_ATTR_NONNULL_RET
+char_u *vim_strsave(const char_u *string)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
return (char_u *)xstrdup((char *)string);
}
@@ -60,7 +61,8 @@ char_u *vim_strsave(char_u *string) FUNC_ATTR_NONNULL_RET
* The allocated memory always has size "len + 1", also when "string" is
* shorter.
*/
-char_u *vim_strnsave(char_u *string, int len) FUNC_ATTR_NONNULL_RET
+char_u *vim_strnsave(const char_u *string, size_t len)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
return (char_u *)strncpy(xmallocz(len), (char *)string, len);
}
@@ -69,31 +71,30 @@ char_u *vim_strnsave(char_u *string, int len) FUNC_ATTR_NONNULL_RET
* Same as vim_strsave(), but any characters found in esc_chars are preceded
* by a backslash.
*/
-char_u *vim_strsave_escaped(char_u *string, char_u *esc_chars)
- FUNC_ATTR_NONNULL_RET
+char_u *vim_strsave_escaped(const char_u *string, const char_u *esc_chars)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
- return vim_strsave_escaped_ext(string, esc_chars, '\\', FALSE);
+ return vim_strsave_escaped_ext(string, esc_chars, '\\', false);
}
/*
- * Same as vim_strsave_escaped(), but when "bsl" is TRUE also escape
+ * Same as vim_strsave_escaped(), but when "bsl" is true also escape
* characters where rem_backslash() would remove the backslash.
* Escape the characters with "cc".
*/
-char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int bsl)
- FUNC_ATTR_NONNULL_RET
+char_u *vim_strsave_escaped_ext(const char_u *string, const char_u *esc_chars,
+ char_u cc, bool bsl)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
- unsigned length;
- int l;
-
/*
* First count the number of backslashes required.
* Then allocate the memory and insert them.
*/
- length = 1; /* count the trailing NUL */
- for (char_u *p = string; *p; p++) {
- if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) {
- length += l; /* count a multibyte char */
+ size_t length = 1; // count the trailing NUL
+ for (const char_u *p = string; *p; p++) {
+ size_t l;
+ if (has_mbyte && (l = (size_t)(*mb_ptr2len)(p)) > 1) {
+ length += l; // count a multibyte char
p += l - 1;
continue;
}
@@ -104,9 +105,10 @@ char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int b
char_u *escaped_string = xmalloc(length);
char_u *p2 = escaped_string;
- for (char_u *p = string; *p; p++) {
- if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) {
- memmove(p2, p, (size_t)l);
+ for (const char_u *p = string; *p; p++) {
+ size_t l;
+ if (has_mbyte && (l = (size_t)(*mb_ptr2len)(p)) > 1) {
+ memcpy(p2, p, l);
p2 += l;
p += l - 1; /* skip multibyte char */
continue;
@@ -130,10 +132,10 @@ char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int b
* When "do_newline" is false do not escape newline unless it is csh shell.
* Returns the result in allocated memory.
*/
-char_u *vim_strsave_shellescape(char_u *string, bool do_special, bool do_newline)
+char_u *vim_strsave_shellescape(const char_u *string,
+ bool do_special, bool do_newline)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
- unsigned length;
- char_u *p;
char_u *d;
char_u *escaped_string;
int l;
@@ -146,8 +148,8 @@ char_u *vim_strsave_shellescape(char_u *string, bool do_special, bool do_newline
csh_like = csh_like_shell();
/* First count the number of extra bytes required. */
- length = (unsigned)STRLEN(string) + 3; /* two quotes and a trailing NUL */
- for (p = string; *p != NUL; mb_ptr_adv(p)) {
+ size_t length = STRLEN(string) + 3; // two quotes and a trailing NUL
+ for (const char_u *p = string; *p != NUL; mb_ptr_adv(p)) {
if (*p == '\'')
length += 3; /* ' => '\'' */
if ((*p == '\n' && (csh_like || do_newline))
@@ -169,7 +171,7 @@ char_u *vim_strsave_shellescape(char_u *string, bool do_special, bool do_newline
/* add opening quote */
*d++ = '\'';
- for (p = string; *p != NUL; ) {
+ for (const char_u *p = string; *p != NUL; ) {
if (*p == '\'') {
*d++ = '\'';
*d++ = '\\';
@@ -207,7 +209,8 @@ char_u *vim_strsave_shellescape(char_u *string, bool do_special, bool do_newline
* Like vim_strsave(), but make all characters uppercase.
* This uses ASCII lower-to-upper case translation, language independent.
*/
-char_u *vim_strsave_up(char_u *string)
+char_u *vim_strsave_up(const char_u *string)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
char_u *p1;
@@ -220,7 +223,8 @@ char_u *vim_strsave_up(char_u *string)
* Like vim_strnsave(), but make all characters uppercase.
* This uses ASCII lower-to-upper case translation, language independent.
*/
-char_u *vim_strnsave_up(char_u *string, int len) FUNC_ATTR_NONNULL_RET
+char_u *vim_strnsave_up(const char_u *string, size_t len)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
char_u *p1 = vim_strnsave(string, len);
vim_strup(p1);
@@ -231,14 +235,15 @@ char_u *vim_strnsave_up(char_u *string, int len) FUNC_ATTR_NONNULL_RET
* ASCII lower-to-upper case translation, language independent.
*/
void vim_strup(char_u *p)
+ FUNC_ATTR_NONNULL_ALL
{
char_u *p2;
- int c;
+ char_u c;
if (p != NULL) {
p2 = p;
while ((c = *p2) != NUL)
- *p2++ = (c < 'a' || c > 'z') ? c : (c - 0x20);
+ *p2++ = (char_u)((c < 'a' || c > 'z') ? c : c - 0x20);
}
}
@@ -246,7 +251,8 @@ void vim_strup(char_u *p)
* Make string "s" all upper-case and return it in allocated memory.
* Handles multi-byte characters as well as possible.
*/
-char_u *strup_save(char_u *orig)
+char_u *strup_save(const char_u *orig)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
char_u *res = vim_strsave(orig);
@@ -264,8 +270,8 @@ char_u *strup_save(char_u *orig)
int newl = utf_char2len(uc);
if (newl != l) {
// TODO(philix): use xrealloc() in strup_save()
- char_u *s = xmalloc(STRLEN(res) + 1 + newl - l);
- memmove(s, res, p - res);
+ char_u *s = xmalloc(STRLEN(res) + (size_t)(1 + newl - l));
+ memcpy(s, res, (size_t)(p - res));
STRCPY(s + (p - res) + newl, p + l);
p = s + (p - res);
free(res);
@@ -277,7 +283,7 @@ char_u *strup_save(char_u *orig)
} else if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1)
p += l; /* skip multi-byte character */
else {
- *p = TOUPPER_LOC(*p); /* note that toupper() can be a macro */
+ *p = (char_u) TOUPPER_LOC(*p); // note that toupper() can be a macro
p++;
}
}
@@ -289,6 +295,7 @@ char_u *strup_save(char_u *orig)
* copy a space a number of times
*/
void copy_spaces(char_u *ptr, size_t count)
+ FUNC_ATTR_NONNULL_ALL
{
size_t i = count;
char_u *p = ptr;
@@ -301,7 +308,8 @@ void copy_spaces(char_u *ptr, size_t count)
* Copy a character a number of times.
* Does not work for multi-byte characters!
*/
-void copy_chars(char_u *ptr, size_t count, int c)
+void copy_chars(char_u *ptr, size_t count, char_u c)
+ FUNC_ATTR_NONNULL_ALL
{
size_t i = count;
char_u *p = ptr;
@@ -314,6 +322,7 @@ void copy_chars(char_u *ptr, size_t count, int c)
* delete spaces at the end of a string
*/
void del_trailing_spaces(char_u *ptr)
+ FUNC_ATTR_NONNULL_ALL
{
char_u *q;
@@ -326,7 +335,8 @@ void del_trailing_spaces(char_u *ptr)
* Like strncpy(), but always terminate the result with one NUL.
* "to" must be "len + 1" long!
*/
-void vim_strncpy(char_u *to, char_u *from, size_t len)
+void vim_strncpy(char_u *restrict to, const char_u *restrict from, size_t len)
+ FUNC_ATTR_NONNULL_ALL
{
STRNCPY(to, from, len);
to[len] = NUL;
@@ -336,13 +346,15 @@ void vim_strncpy(char_u *to, char_u *from, size_t len)
* Like strcat(), but make sure the result fits in "tosize" bytes and is
* always NUL terminated.
*/
-void vim_strcat(char_u *to, char_u *from, size_t tosize)
+void vim_strcat(char_u *restrict to, const char_u *restrict from,
+ size_t tosize)
+ FUNC_ATTR_NONNULL_ALL
{
size_t tolen = STRLEN(to);
size_t fromlen = STRLEN(from);
if (tolen + fromlen + 1 > tosize) {
- memmove(to + tolen, from, tosize - tolen - 1);
+ memcpy(to + tolen, from, tosize - tolen - 1);
to[tosize - 1] = NUL;
} else
STRCPY(to + tolen, from);
@@ -354,7 +366,8 @@ void vim_strcat(char_u *to, char_u *from, size_t tosize)
* Doesn't work for multi-byte characters.
* return 0 for match, < 0 for smaller, > 0 for bigger
*/
-int vim_stricmp(char *s1, char *s2)
+int vim_stricmp(const char *s1, const char *s2)
+ FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
int i;
@@ -377,7 +390,8 @@ int vim_stricmp(char *s1, char *s2)
* Doesn't work for multi-byte characters.
* return 0 for match, < 0 for smaller, > 0 for bigger
*/
-int vim_strnicmp(char *s1, char *s2, size_t len)
+int vim_strnicmp(const char *s1, const char *s2, size_t len)
+ FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
int i;
@@ -400,16 +414,16 @@ int vim_strnicmp(char *s1, char *s2, size_t len)
* with characters from 128 to 255 correctly. It also doesn't return a
* pointer to the NUL at the end of the string.
*/
-char_u *vim_strchr(char_u *string, int c)
+char_u *vim_strchr(const char_u *string, int c)
+ FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
- char_u *p;
int b;
- p = string;
+ const char_u *p = string;
if (enc_utf8 && c >= 0x80) {
while (*p != NUL) {
if (utf_ptr2char(p) == c)
- return p;
+ return (char_u *) p;
p += (*mb_ptr2len)(p);
}
return NULL;
@@ -420,7 +434,7 @@ char_u *vim_strchr(char_u *string, int c)
c = ((unsigned)c >> 8) & 0xff;
while ((b = *p) != NUL) {
if (b == c && p[1] == n2)
- return p;
+ return (char_u *) p;
p += (*mb_ptr2len)(p);
}
return NULL;
@@ -428,14 +442,14 @@ char_u *vim_strchr(char_u *string, int c)
if (has_mbyte) {
while ((b = *p) != NUL) {
if (b == c)
- return p;
+ return (char_u *) p;
p += (*mb_ptr2len)(p);
}
return NULL;
}
while ((b = *p) != NUL) {
if (b == c)
- return p;
+ return (char_u *) p;
++p;
}
return NULL;
@@ -446,13 +460,14 @@ char_u *vim_strchr(char_u *string, int c)
* strings with characters above 128 correctly. It also doesn't return a
* pointer to the NUL at the end of the string.
*/
-char_u *vim_strbyte(char_u *string, int c)
+char_u *vim_strbyte(const char_u *string, int c)
+ FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
- char_u *p = string;
+ const char_u *p = string;
while (*p != NUL) {
if (*p == c)
- return p;
+ return (char_u *) p;
++p;
}
return NULL;
@@ -463,24 +478,26 @@ char_u *vim_strbyte(char_u *string, int c)
* Return NULL if not found.
* Does not handle multi-byte char for "c"!
*/
-char_u *vim_strrchr(char_u *string, int c)
+char_u *vim_strrchr(const char_u *string, int c)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
- char_u *retval = NULL;
- char_u *p = string;
+ const char_u *retval = NULL;
+ const char_u *p = string;
while (*p) {
if (*p == c)
retval = p;
mb_ptr_adv(p);
}
- return retval;
+ return (char_u *) retval;
}
/*
* Vim has its own isspace() function, because on some machines isspace()
* can't handle characters above 128.
*/
-int vim_isspace(int x)
+bool vim_isspace(int x)
+ FUNC_ATTR_CONST
{
return (x >= 9 && x <= 13) || x == ' ';
}
@@ -493,6 +510,7 @@ int vim_isspace(int x)
# include "strings.c.generated.h"
#endif
static int sort_compare(const void *s1, const void *s2)
+ FUNC_ATTR_NONNULL_ALL
{
return STRCMP(*(char **)s1, *(char **)s2);
}
@@ -503,24 +521,26 @@ void sort_strings(char_u **files, int count)
}
/*
- * Return TRUE if string "s" contains a non-ASCII character (128 or higher).
- * When "s" is NULL FALSE is returned.
+ * Return true if string "s" contains a non-ASCII character (128 or higher).
+ * When "s" is NULL false is returned.
*/
-int has_non_ascii(char_u *s)
+bool has_non_ascii(const char_u *s)
+ FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
- char_u *p;
+ const char_u *p;
if (s != NULL)
for (p = s; *p != NUL; ++p)
if (*p >= 128)
- return TRUE;
- return FALSE;
+ return true;
+ return false;
}
/*
* Concatenate two strings and return the result in allocated memory.
*/
-char_u *concat_str(char_u *str1, char_u *str2) FUNC_ATTR_NONNULL_RET
+char_u *concat_str(const char_u *restrict str1, const char_u *restrict str2)
+ FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
size_t l = STRLEN(str1);
char_u *dest = xmalloc(l + STRLEN(str2) + 1);
generated by cgit (git 2.34.1) at 2025-05-05 11:58:55 +0000