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Add startswith and endswith, functions that compare the beginning or ending of a string

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This commit is contained in:
James R 2022-10-14 18:20:52 -07:00
parent e08ebac5c8
commit 373af01092
2 changed files with 19 additions and 0 deletions
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3
src/doomtype.h
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@ -107,6 +107,9 @@ typedef long ssize_t;
char *strcasestr(const char *in, const char *what);
#define stristr strcasestr
int startswith (const char *base, const char *tag);
int endswith (const char *base, const char *tag);
#if defined (macintosh) //|| defined (__APPLE__) //skip all boolean/Boolean crap
#define true 1
#define false 0

16
src/string.c
View file

@ -52,3 +52,19 @@ size_t strlcpy(char *dst, const char *src, size_t siz)
#endif
#include "strcasestr.c"
int startswith(const char *path, const char *tag)
{
return !strncmp(path, tag, strlen(tag));
}
int endswith(const char *base, const char *tag)
{
const size_t base_length = strlen(base);
const size_t tag_length = strlen(tag);
if (tag_length > base_length)
return false;
return !memcmp(&base[base_length - tag_length], tag, tag_length);
}