diff options
Diffstat (limited to 'src/core/ngx_string.c')
| -rw-r--r-- | src/core/ngx_string.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c index 32a4079a0..8e4e09a3a 100644 --- a/src/core/ngx_string.c +++ b/src/core/ngx_string.c @@ -28,6 +28,238 @@ u_char *ngx_cpystrn(u_char *dst, u_char *src, size_t n) } +/* + * supported formats: + * %[0][width]O off_t + * %[0][width]T time_t + * %[0][width]S ssize_t + * %[0][width]uS size_t + * %[0][width]uxS size_t in hex + * %[0][width]l long + * %[0][width]d int + * %[0][width]i ngx_int_t + * %[0][width]ui ngx_uint_t + * %[0][width]uxi ngx_uint_t in hex + * %s null-terminated string + * %% % + * + */ + +u_char *ngx_sprintf(u_char *buf, char *fmt, ...) +{ + u_char *p, c, temp[NGX_MAX_INT_LEN]; + int d; + long l; + off_t offset; + size_t size, len; + ssize_t ssize; + time_t sec; + va_list arg; + ngx_int_t i; + ngx_uint_t ui, zero, width, sign, hexadecimal; + static u_char hex[] = "0123456789abcdef"; + + va_start(arg, fmt); + + while (*fmt) { + if (*fmt == '%') { + + zero = (*++fmt == '0') ? 1 : 0; + width = 0; + sign = 1; + hexadecimal = 0; + + p = temp + NGX_MAX_INT_LEN; + + while (*fmt >= '0' && *fmt <= '9') { + width = width * 10 + *fmt++ - '0'; + } + + + for ( ;; ) { + switch (*fmt) { + + case 'u': + sign = 0; + fmt++; + continue; + + case 'x': + hexadecimal = 1; + fmt++; + continue; + + default: + break; + } + + break; + } + + + switch (*fmt) { + + case 'O': + offset = va_arg(arg, off_t); + + if (offset < 0) { + *buf++ = '-'; + offset = -offset; + } + + do { + *--p = (u_char) (offset % 10 + '0'); + } while (offset /= 10); + + break; + + case 'T': + sec = va_arg(arg, time_t); + + if (sec < 0) { + *buf++ = '-'; + sec = -sec; + } + + do { + *--p = (u_char) (sec % 10 + '0'); + } while (sec /= 10); + + break; + + case 'S': + if (sign) { + ssize = va_arg(arg, ssize_t); + + if (ssize < 0) { + *buf++ = '-'; + size = (size_t) -ssize; + + } else { + size = (size_t) ssize; + } + + } else { + size = va_arg(arg, size_t); + } + + if (hexadecimal) { + do { + *--p = hex[size & 0xf]; + } while (size >>= 4); + + } else { + do { + *--p = (u_char) (size % 10 + '0'); + } while (size /= 10); + } + + break; + + case 'l': + l = va_arg(arg, long); + + if (l < 0) { + *buf++ = '-'; + l = -l; + } + + do { + *--p = (u_char) (l % 10 + '0'); + } while (l /= 10); + + break; + + case 'd': + d = va_arg(arg, int); + + if (d < 0) { + *buf++ = '-'; + d = -d; + } + + do { + *--p = (u_char) (d % 10 + '0'); + } while (d /= 10); + + break; + + case 'i': + if (sign) { + i = va_arg(arg, ngx_int_t); + + if (i < 0) { + *buf++ = '-'; + ui = (ngx_uint_t) -i; + + } else { + ui = (ngx_uint_t) i; + } + + } else { + ui = va_arg(arg, ngx_uint_t); + } + + if (hexadecimal) { + do { + *--p = hex[ui & 0xf]; + } while (ui >>= 4); + + } else { + do { + *--p = (u_char) (ui % 10 + '0'); + } while (ui /= 10); + } + + break; + + case 's': + p = va_arg(arg, u_char *); + + while (*p) { + *buf++ = *p++; + } + fmt++; + + continue; + + case '%': + *buf++ = '%'; + fmt++; + + continue; + + default: + *buf++ = *fmt++; + + continue; + } + + len = (temp + NGX_MAX_INT_LEN) - p; + + c = (u_char) (zero ? '0' : ' '); + + while (len++ < width) { + *buf++ = c; + } + + buf = ngx_cpymem(buf, p, ((temp + NGX_MAX_INT_LEN) - p)); + + fmt++; + + } else { + *buf++ = *fmt++; + } + } + + va_end(arg); + + *buf = '\0'; + + return buf; +} + + ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n) { if (n == 0) { @@ -50,6 +282,40 @@ ngx_int_t ngx_rstrncmp(u_char *s1, u_char *s2, size_t n) } +ngx_int_t ngx_rstrncasecmp(u_char *s1, u_char *s2, size_t n) +{ + u_char c1, c2; + + if (n == 0) { + return 0; + } + + n--; + + for ( ;; ) { + c1 = s1[n]; + if (c1 >= 'a' && c1 <= 'z') { + c1 -= 'a' - 'A'; + } + + c2 = s2[n]; + if (c2 >= 'a' && c2 <= 'z') { + c2 -= 'a' - 'A'; + } + + if (c1 != c2) { + return c1 - c2; + } + + if (n == 0) { + return 0; + } + + n--; + } +} + + ngx_int_t ngx_atoi(u_char *line, size_t n) { ngx_int_t value; |