nginx/src/core/ngx_string.c

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#include <ngx_config.h>
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#include <ngx_core.h>
char *ngx_cpystrn(char *dst, char *src, size_t n)
{
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if (n == 0) {
return dst;
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}
for (/* void */; --n; dst++, src++) {
*dst = *src;
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if (*dst == '\0') {
return dst;
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}
}
*dst = '\0';
return dst;
}
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int ngx_rstrncmp(char *s1, char *s2, size_t n)
{
if (n == 0) {
return 0;
}
n--;
for ( ;; ) {
if (s1[n] != s2[n]) {
return (u_char) s1[n] - (u_char) s2[n];
}
if (n == 0) {
return 0;
}
n--;
}
}
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int ngx_atoi(char *line, size_t n)
{
int value;
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if (n == 0) {
return NGX_ERROR;
}
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for (value = 0; n--; line++) {
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if (*line < '0' || *line > '9') {
return NGX_ERROR;
}
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value = value * 10 + (*line - '0');
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}
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if (value < 0) {
return NGX_ERROR;
} else {
return value;
}
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}
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void ngx_print_md5(char *text, u_char *md5)
{
ngx_snprintf(text, 33, "%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x%0x",
md5[0], md5[1], md5[2], md5[3], md5[4], md5[5],
md5[6], md5[7], md5[8], md5[9], md5[10], md5[11],
md5[12], md5[13], md5[14], md5[15]);
}
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#if 0
char *ngx_psprintf(ngx_pool_t *p, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
while (*fmt) {
switch(*fmt++) {
case '%':
switch(*fmt++) {
case 's':
s = va_arg(args, char *);
n += ngx_strlen(s);
break;
default:
n++;
}
default:
n++;
}
}
str = ngx_palloc(p, n);
va_start(args, fmt);
for (i = 0; i < n; i++) {
switch(*fmt++) {
case '%':
switch(*fmt++) {
case 's':
s = va_arg(args, char *);
while (str[i++] = s);
break;
default:
n++;
}
default:
str[i] = *fmt;
}
}
len += ngx_vsnprintf(errstr + len, sizeof(errstr) - len - 1, fmt, args);
va_end(args);
}
#endif