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author | Tor Andersson <tor@ghostscript.com> | 2009-02-28 13:00:34 +0100 |
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committer | Tor Andersson <tor@ghostscript.com> | 2009-02-28 13:00:34 +0100 |
commit | f744dace3f0f91b8505979bf244453c9ec713b4b (patch) | |
tree | 86fed467944886a17d4d22038990a8fd8d2e3be8 /fitz/util_strlcpy.c | |
parent | d0631f32c95f656d30c90d28c15a56b09fcc86ee (diff) | |
download | mupdf-f744dace3f0f91b8505979bf244453c9ec713b4b.tar.xz |
Moved Fitz files into one directory.
Diffstat (limited to 'fitz/util_strlcpy.c')
-rw-r--r-- | fitz/util_strlcpy.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/fitz/util_strlcpy.c b/fitz/util_strlcpy.c new file mode 100644 index 00000000..15b378b2 --- /dev/null +++ b/fitz/util_strlcpy.c @@ -0,0 +1,65 @@ +#include <string.h> + +/* Copy src to string dst of size siz. At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ + +int strlcpy(char *dst, const char *src, int siz) +{ + register char *d = dst; + register const char *s = src; + register int n = siz; + + /* Copy as many bytes as will fit */ + if (n != 0 && --n != 0) { + do { + if ((*d++ = *s++) == 0) + break; + } while (--n != 0); + } + + /* Not enough room in dst, add NUL and traverse rest of src */ + if (n == 0) { + if (siz != 0) + *d = '\0'; /* NUL-terminate dst */ + while (*s++) + ; + } + + return(s - src - 1); /* count does not include NUL */ +} + +/* Appends src to string dst of size siz (unlike strncat, siz is the + * full size of dst, not space left). At most siz-1 characters + * will be copied. Always NUL terminates (unless siz == 0). + * Returns strlen(src); if retval >= siz, truncation occurred. + */ + +int strlcat(char *dst, const char *src, int siz) +{ + register char *d = dst; + register const char *s = src; + register int n = siz; + int dlen; + + /* Find the end of dst and adjust bytes left but don't go past end */ + while (*d != '\0' && n-- != 0) + d++; + dlen = d - dst; + n = siz - dlen; + + if (n == 0) + return dlen + strlen(s); + while (*s != '\0') { + if (n != 1) { + *d++ = *s; + n--; + } + s++; + } + *d = '\0'; + + return dlen + (s - src); /* count does not include NUL */ +} + |