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strings/memory: constify and func_attr.

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Fix MB_COPY_cHAR() to accept const pointers.
This commit is contained in:
Scott Prager
2014-11-19 14:44:45 -05:00
parent 763b62698a
commit ecf81c3f20
6 changed files with 70 additions and 47 deletions
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6
src/nvim/charset.c
View File

@@ -1850,7 +1850,7 @@ int hexhex2nr(char_u *p)
#endif // if defined(FEAT_TERMRESPONSE) || defined(FEAT_GUI_GTK)
// || defined(PROTO)
/// Return TRUE if "str" starts with a backslash that should be removed.
/// Return true if "str" starts with a backslash that should be removed.
/// For WIN32 this is only done when the character after the
/// backslash is not a normal file name character.
/// '$' is a valid file name character, we don't remove the backslash before
@@ -1864,8 +1864,8 @@ int hexhex2nr(char_u *p)
///
/// @param str
///
/// @return TRUE if `str` starts with a backslash that should be removed.
int rem_backslash(char_u *str)
/// @return true if `str` starts with a backslash that should be removed.
bool rem_backslash(const char_u *str)
{
#ifdef BACKSLASH_IN_FILENAME
return str[0] == '\\'

2
src/nvim/ex_docmd.c
View File

@@ -7480,7 +7480,7 @@ static void ex_tag_cmd(exarg_T *eap, char_u *name)
* If found return one of the SPEC_ values and set "*usedlen" to the length of
* the variable. Otherwise return -1 and "*usedlen" is unchanged.
*/
int find_cmdline_var(char_u *src, int *usedlen)
int find_cmdline_var(const char_u *src, int *usedlen) FUNC_ATTR_NONNULL_ALL
{
int len;
int i;

5
src/nvim/macros.h
View File

@@ -143,8 +143,9 @@
/* get length of multi-byte char, not including composing chars */
# define mb_cptr2len(p) (enc_utf8 ? utf_ptr2len(p) : (*mb_ptr2len)(p))
# define MB_COPY_CHAR(f, \
t) if (has_mbyte) mb_copy_char(&f, &t); else *t++ = *f++
# define MB_COPY_CHAR(f, t) \
if (has_mbyte) mb_copy_char((const char_u **)(&f), &t); \
else *t++ = *f++
# define MB_CHARLEN(p) (has_mbyte ? mb_charlen(p) : (int)STRLEN(p))
# define MB_CHAR2LEN(c) (has_mbyte ? mb_char2len(c) : 1)
# define PTR2CHAR(p) (has_mbyte ? mb_ptr2char(p) : (int)*(p))

2
src/nvim/mbyte.c
View File

@@ -3003,7 +3003,7 @@ int utf_head_off(const char_u *base, const char_u *p)
/*
* Copy a character from "*fp" to "*tp" and advance the pointers.
*/
void mb_copy_char(char_u **fp, char_u **tp)
void mb_copy_char(const char_u **fp, char_u **tp)
{
int l = (*mb_ptr2len)(*fp);

3
src/nvim/memory.c
View File

@@ -305,6 +305,7 @@ char *xstpncpy(char *restrict dst, const char *restrict src, size_t maxlen)
/// @param size Size of destination buffer
/// @return Length of the source string (i.e.: strlen(src))
size_t xstrlcpy(char *restrict dst, const char *restrict src, size_t size)
FUNC_ATTR_NONNULL_ALL
{
size_t ret = strlen(src);
@@ -348,7 +349,7 @@ char *xstrdup(const char *str)
/// @param c The byte to search for.
/// @param len The length of the memory object.
/// @returns a pointer to the found byte in src[len], or NULL.
void *xmemrchr(void *src, uint8_t c, size_t len)
void *xmemrchr(const void *src, uint8_t c, size_t len)
FUNC_ATTR_NONNULL_ALL FUNC_ATTR_PURE
{
while (len--) {

99
src/nvim/strings.c
View File

@@ -50,7 +50,8 @@
/*
* 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);
}
@@ -61,7 +62,8 @@ 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, int len)
FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
return (char_u *)strncpy(xmallocz(len), (char *)string, len);
}
@@ -70,8 +72,8 @@ 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);
}
@@ -81,8 +83,9 @@ char_u *vim_strsave_escaped(char_u *string, char_u *esc_chars)
* 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,
int cc, int bsl)
FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
unsigned length;
int l;
@@ -92,7 +95,7 @@ char_u *vim_strsave_escaped_ext(char_u *string, char_u *esc_chars, int cc, int b
* Then allocate the memory and insert them.
*/
length = 1; /* count the trailing NUL */
for (char_u *p = string; *p; p++) {
for (const char_u *p = string; *p; p++) {
if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) {
length += l; /* count a multibyte char */
p += l - 1;
@@ -105,7 +108,7 @@ 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++) {
for (const char_u *p = string; *p; p++) {
if (has_mbyte && (l = (*mb_ptr2len)(p)) > 1) {
memmove(p2, p, (size_t)l);
p2 += l;
@@ -131,10 +134,10 @@ 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;
@@ -147,8 +150,8 @@ 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))
@@ -170,7 +173,7 @@ 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++ = '\\';
@@ -208,7 +211,8 @@ 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;
@@ -221,7 +225,8 @@ 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, int len)
FUNC_ATTR_NONNULL_RET FUNC_ATTR_MALLOC FUNC_ATTR_NONNULL_ALL
{
char_u *p1 = vim_strnsave(string, len);
vim_strup(p1);
@@ -232,6 +237,7 @@ 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;
@@ -247,7 +253,8 @@ 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);
@@ -290,6 +297,7 @@ 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;
@@ -303,6 +311,7 @@ void copy_spaces(char_u *ptr, size_t count)
* Does not work for multi-byte characters!
*/
void copy_chars(char_u *ptr, size_t count, int c)
FUNC_ATTR_NONNULL_ALL
{
size_t i = count;
char_u *p = ptr;
@@ -315,6 +324,7 @@ 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;
@@ -327,7 +337,8 @@ 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;
@@ -337,13 +348,15 @@ 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);
@@ -355,7 +368,8 @@ 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;
@@ -378,7 +392,8 @@ 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;
@@ -401,16 +416,16 @@ 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;
@@ -421,7 +436,7 @@ 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;
@@ -429,14 +444,14 @@ 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;
@@ -447,13 +462,14 @@ 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;
@@ -464,17 +480,18 @@ 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;
}
/*
@@ -482,6 +499,7 @@ char_u *vim_strrchr(char_u *string, int c)
* can't handle characters above 128.
*/
int vim_isspace(int x)
FUNC_ATTR_CONST
{
return (x >= 9 && x <= 13) || x == ' ';
}
@@ -494,6 +512,7 @@ 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);
}
@@ -507,9 +526,10 @@ 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.
*/
int has_non_ascii(char_u *s)
int 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)
@@ -521,7 +541,8 @@ int has_non_ascii(char_u *s)
/*
* 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);