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/*
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
* Copyright (c) 2007 Mans Rullgard
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
#include "common.h"
#include "mem.h"
#include "avstring.h"
int av_strstart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && *pfx == *str) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
int av_stristart(const char *str, const char *pfx, const char **ptr)
{
while (*pfx && av_toupper((unsigned)*pfx) == av_toupper((unsigned)*str)) {
pfx++;
str++;
}
if (!*pfx && ptr)
*ptr = str;
return !*pfx;
}
char *av_stristr(const char *s1, const char *s2)
{
if (!*s2)
return s1;
do
if (av_stristart(s1, s2, NULL))
return s1;
while (*s1++);
return NULL;
}
char *av_strnstr(const char *haystack, const char *needle, size_t hay_length)
{
size_t needle_len = strlen(needle);
if (!needle_len)
return haystack;
while (hay_length >= needle_len) {
hay_length--;
if (!memcmp(haystack, needle, needle_len))
return haystack;
haystack++;
}
return NULL;
}
size_t av_strlcpy(char *dst, const char *src, size_t size)
{
size_t len = 0;
while (++len < size && *src)
*dst++ = *src++;
if (len <= size)
*dst = 0;
return len + strlen(src) - 1;
}
size_t av_strlcat(char *dst, const char *src, size_t size)
{
size_t len = strlen(dst);
if (size <= len + 1)
return len + strlen(src);
return len + av_strlcpy(dst + len, src, size - len);
}
size_t av_strlcatf(char *dst, size_t size, const char *fmt, ...)
{
int len = strlen(dst);
va_list vl;
va_start(vl, fmt);
len += vsnprintf(dst + len, size > len ? size - len : 0, fmt, vl);
va_end(vl);
return len;
}
char *av_d2str(double d)
{
char *str = av_malloc(16);
if (str)
snprintf(str, 16, "%f", d);
return str;
}
#define WHITESPACES " \n\t"
char *av_get_token(const char **buf, const char *term)
{
char *out = av_malloc(strlen(*buf) + 1);
char *ret = out, *end = out;
const char *p = *buf;
if (!out)
return NULL;
p += strspn(p, WHITESPACES);
while (*p && !strspn(p, term)) {
char c = *p++;
if (c == '\\' && *p) {
*out++ = *p++;
end = out;
} else if (c == '\'') {
while (*p && *p != '\'')
*out++ = *p++;
if (*p) {
p++;
end = out;
}
} else {
*out++ = c;
}
}
do
*out-- = 0;
while (out >= end && strspn(out, WHITESPACES));
*buf = p;
return ret;
}
int av_strcasecmp(const char *a, const char *b)
{
uint8_t c1, c2;
do {
c1 = av_tolower(*a++);
c2 = av_tolower(*b++);
} while (c1 && c1 == c2);
return c1 - c2;
}
int av_strncasecmp(const char *a, const char *b, size_t n)
{
const char *end = a + n;
uint8_t c1, c2;
do {
c1 = av_tolower(*a++);
c2 = av_tolower(*b++);
} while (a < end && c1 && c1 == c2);
return c1 - c2;
}
const char *av_basename(const char *path)
{
char *p = strrchr(path, '/');
#if HAVE_DOS_PATHS
char *q = strrchr(path, '\\');
char *d = strchr(path, ':');
p = FFMAX3(p, q, d);
#endif
if (!p)
return path;
return p + 1;
}
const char *av_dirname(char *path)
{
char *p = strrchr(path, '/');
#if HAVE_DOS_PATHS
char *q = strrchr(path, '\\');
char *d = strchr(path, ':');
d = d ? d + 1 : d;
p = FFMAX3(p, q, d);
#endif
if (!p)
return ".";
*p = '\0';
return path;
}
int av_isdigit(int c)
{
return c >= '0' && c <= '9';
}
int av_isgraph(int c)
{
return c > 32 && c < 127;
}
int av_isspace(int c)
{
return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' ||
c == '\v';
}
int av_isxdigit(int c)
{
c = av_tolower(c);
return av_isdigit(c) || (c >= 'a' && c <= 'z');
}
#ifdef TEST
int main(void)
{
int i;
const char *strings[] = {
"''",
"",
":",
"\\",
"'",
" '' :",
" '' '' :",
"foo '' :",
"'foo'",
"foo ",
" ' foo ' ",
"foo\\",
"foo': blah:blah",
"foo\\: blah:blah",
"foo\'",
"'foo : ' :blahblah",
"\\ :blah",
" foo",
" foo ",
" foo \\ ",
"foo ':blah",
" foo bar : blahblah",
"\\f\\o\\o",
"'foo : \\ \\ ' : blahblah",
"'\\fo\\o:': blahblah",
"\\'fo\\o\\:': foo ' :blahblah"
};
printf("Testing av_get_token()\n");
for (i = 0; i < FF_ARRAY_ELEMS(strings); i++) {
const char *p = strings[i], *q;
printf("|%s|", p);
q = av_get_token(&p, ":");
printf(" -> |%s|", q);
printf(" + |%s|\n", p);
av_free(q);
}
return 0;
}
#endif /* TEST */
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