117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
#include "json.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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char *json_str(const char *json, const char *key) {
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if (!json || !key) return NULL;
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char needle[128]; snprintf(needle, sizeof(needle), "\"%s\"", key);
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const char *p = strstr(json, needle);
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if (!p) return NULL;
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p += strlen(needle);
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while (*p == ' ' || *p == ':') p++;
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if (*p == '"') {
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p++;
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const char *end = p;
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while (*end && !(*end == '"' && *(end-1) != '\\')) end++;
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size_t len = end - p;
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char *r = malloc(len+1); memcpy(r, p, len); r[len] = 0; return r;
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}
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const char *end = p;
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while (*end && *end != ',' && *end != '}' && *end != ']') end++;
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size_t len = end - p;
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char *r = malloc(len+1); memcpy(r, p, len); r[len] = 0; return r;
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}
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char **json_array(const char *json, int *n) {
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*n = 0;
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if (!json) return NULL;
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const char *p = json;
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while (*p && *p != '[') p++;
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if (!*p) return NULL;
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p++;
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int cap = 64;
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char **arr = malloc(cap * sizeof(char*));
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int depth = 0; const char *obj_start = NULL; int in_str = 0;
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for (; *p; p++) {
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if (*p == '"' && (p == json || *(p-1) != '\\')) { in_str = !in_str; continue; }
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if (in_str) continue;
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if (*p == '{' || *p == '[') { if (depth == 0) obj_start = p; depth++; }
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else if (*p == '}' || *p == ']') {
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depth--;
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if (depth == 0 && obj_start) {
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size_t len = p - obj_start + 1;
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char *obj = malloc(len+1); memcpy(obj, obj_start, len); obj[len] = 0;
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if (*n >= cap) { cap *= 2; arr = realloc(arr, cap*sizeof(char*)); }
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arr[(*n)++] = obj;
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obj_start = NULL;
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if (*p == ']') break;
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}
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}
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}
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return arr;
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}
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void urldecode(char *s) {
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char *w = s, *r = s;
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while (*r) {
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if (*r == '%' && r[1] && r[2]) {
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char hex[3] = {r[1], r[2], 0}; *w++ = (char)strtol(hex, NULL, 16); r += 3;
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} else if (*r == '+') { *w++ = ' '; r++; }
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else { *w++ = *r++; }
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}
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*w = 0;
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}
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char *qparam(const char *qs, const char *key) {
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if (!qs || !key) return NULL;
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char needle[128]; snprintf(needle, sizeof(needle), "%s=", key);
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const char *p = strstr(qs, needle);
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if (!p) return NULL;
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p += strlen(needle);
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const char *end = strchr(p, '&');
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size_t len = end ? (size_t)(end-p) : strlen(p);
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char *r = malloc(len+1); memcpy(r, p, len); r[len] = 0;
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urldecode(r);
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return r;
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}
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void html_esc(Buf *b, const char *s) {
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for (; *s; s++) {
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if (*s == '<') buf_str(b, "<");
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else if (*s == '>') buf_str(b, ">");
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else if (*s == '&') buf_str(b, "&");
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else if (*s == '"') buf_str(b, """);
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else buf_append(b, s, 1);
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}
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}
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void js_esc(Buf *b, const char *s) {
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for (; *s; s++) {
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if (*s == '\'') buf_str(b, "\\'");
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else if (*s == '\\') buf_str(b, "\\\\");
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else if (*s == '\n' || *s == '\r') {}
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else buf_append(b, s, 1);
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}
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}
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void fwrite_json_str(FILE *f, const char *s) {
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fputc('"', f);
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for (; *s; s++) {
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if (*s == '"' || *s == '\\') fputc('\\', f);
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if ((unsigned char)*s >= 0x20) fputc(*s, f);
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}
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fputc('"', f);
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}
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int str_icontains(const char *hay, const char *needle) {
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if (!hay || !needle || !*needle) return 1;
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char h[2048], n[256];
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strncpy(h, hay, sizeof(h)-1); h[sizeof(h)-1] = 0;
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strncpy(n, needle, sizeof(n)-1); n[sizeof(n)-1] = 0;
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for (char *p = h; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
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for (char *p = n; *p; p++) if (*p >= 'A' && *p <= 'Z') *p += 32;
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return strstr(h, n) != NULL;
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}
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