summaryrefslogtreecommitdiff
path: root/examples/c-json-stdout/jsmn/example
diff options
context:
space:
mode:
Diffstat (limited to 'examples/c-json-stdout/jsmn/example')
-rw-r--r--examples/c-json-stdout/jsmn/example/jsondump.c134
-rw-r--r--examples/c-json-stdout/jsmn/example/simple.c77
2 files changed, 0 insertions, 211 deletions
diff --git a/examples/c-json-stdout/jsmn/example/jsondump.c b/examples/c-json-stdout/jsmn/example/jsondump.c
deleted file mode 100644
index 1eb620640..000000000
--- a/examples/c-json-stdout/jsmn/example/jsondump.c
+++ /dev/null
@@ -1,134 +0,0 @@
-#include "../jsmn.h"
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-/* Function realloc_it() is a wrapper function for standard realloc()
- * with one difference - it frees old memory pointer in case of realloc
- * failure. Thus, DO NOT use old data pointer in anyway after call to
- * realloc_it(). If your code has some kind of fallback algorithm if
- * memory can't be re-allocated - use standard realloc() instead.
- */
-static inline void *realloc_it(void *ptrmem, size_t size) {
- void *p = realloc(ptrmem, size);
- if (!p) {
- free(ptrmem);
- fprintf(stderr, "realloc(): errno=%d\n", errno);
- }
- return p;
-}
-
-/*
- * An example of reading JSON from stdin and printing its content to stdout.
- * The output looks like YAML, but I'm not sure if it's really compatible.
- */
-
-static int dump(const char *js, jsmntok_t *t, size_t count, int indent) {
- int i, j, k;
- jsmntok_t *key;
- if (count == 0) {
- return 0;
- }
- if (t->type == JSMN_PRIMITIVE) {
- printf("%.*s", t->end - t->start, js + t->start);
- return 1;
- } else if (t->type == JSMN_STRING) {
- printf("'%.*s'", t->end - t->start, js + t->start);
- return 1;
- } else if (t->type == JSMN_OBJECT) {
- printf("\n");
- j = 0;
- for (i = 0; i < t->size; i++) {
- for (k = 0; k < indent; k++) {
- printf(" ");
- }
- key = t + 1 + j;
- j += dump(js, key, count - j, indent + 1);
- if (key->size > 0) {
- printf(": ");
- j += dump(js, t + 1 + j, count - j, indent + 1);
- }
- printf("\n");
- }
- return j + 1;
- } else if (t->type == JSMN_ARRAY) {
- j = 0;
- printf("\n");
- for (i = 0; i < t->size; i++) {
- for (k = 0; k < indent - 1; k++) {
- printf(" ");
- }
- printf(" - ");
- j += dump(js, t + 1 + j, count - j, indent + 1);
- printf("\n");
- }
- return j + 1;
- }
- return 0;
-}
-
-int main() {
- int r;
- int eof_expected = 0;
- char *js = NULL;
- size_t jslen = 0;
- char buf[BUFSIZ];
-
- jsmn_parser p;
- jsmntok_t *tok;
- size_t tokcount = 2;
-
- /* Prepare parser */
- jsmn_init(&p);
-
- /* Allocate some tokens as a start */
- tok = malloc(sizeof(*tok) * tokcount);
- if (tok == NULL) {
- fprintf(stderr, "malloc(): errno=%d\n", errno);
- return 3;
- }
-
- for (;;) {
- /* Read another chunk */
- r = fread(buf, 1, sizeof(buf), stdin);
- if (r < 0) {
- fprintf(stderr, "fread(): %d, errno=%d\n", r, errno);
- return 1;
- }
- if (r == 0) {
- if (eof_expected != 0) {
- return 0;
- } else {
- fprintf(stderr, "fread(): unexpected EOF\n");
- return 2;
- }
- }
-
- js = realloc_it(js, jslen + r + 1);
- if (js == NULL) {
- return 3;
- }
- strncpy(js + jslen, buf, r);
- jslen = jslen + r;
-
- again:
- r = jsmn_parse(&p, js, jslen, tok, tokcount);
- if (r < 0) {
- if (r == JSMN_ERROR_NOMEM) {
- tokcount = tokcount * 2;
- tok = realloc_it(tok, sizeof(*tok) * tokcount);
- if (tok == NULL) {
- return 3;
- }
- goto again;
- }
- } else {
- dump(js, tok, p.toknext, 0);
- eof_expected = 1;
- }
- }
-
- return EXIT_SUCCESS;
-}
diff --git a/examples/c-json-stdout/jsmn/example/simple.c b/examples/c-json-stdout/jsmn/example/simple.c
deleted file mode 100644
index 1254575a1..000000000
--- a/examples/c-json-stdout/jsmn/example/simple.c
+++ /dev/null
@@ -1,77 +0,0 @@
-#include "../jsmn.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/*
- * A small example of jsmn parsing when JSON structure is known and number of
- * tokens is predictable.
- */
-
-static const char *JSON_STRING =
- "{\"user\": \"johndoe\", \"admin\": false, \"uid\": 1000,\n "
- "\"groups\": [\"users\", \"wheel\", \"audio\", \"video\"]}";
-
-static int jsoneq(const char *json, jsmntok_t *tok, const char *s) {
- if (tok->type == JSMN_STRING && (int)strlen(s) == tok->end - tok->start &&
- strncmp(json + tok->start, s, tok->end - tok->start) == 0) {
- return 0;
- }
- return -1;
-}
-
-int main() {
- int i;
- int r;
- jsmn_parser p;
- jsmntok_t t[128]; /* We expect no more than 128 tokens */
-
- jsmn_init(&p);
- r = jsmn_parse(&p, JSON_STRING, strlen(JSON_STRING), t,
- sizeof(t) / sizeof(t[0]));
- if (r < 0) {
- printf("Failed to parse JSON: %d\n", r);
- return 1;
- }
-
- /* Assume the top-level element is an object */
- if (r < 1 || t[0].type != JSMN_OBJECT) {
- printf("Object expected\n");
- return 1;
- }
-
- /* Loop over all keys of the root object */
- for (i = 1; i < r; i++) {
- if (jsoneq(JSON_STRING, &t[i], "user") == 0) {
- /* We may use strndup() to fetch string value */
- printf("- User: %.*s\n", t[i + 1].end - t[i + 1].start,
- JSON_STRING + t[i + 1].start);
- i++;
- } else if (jsoneq(JSON_STRING, &t[i], "admin") == 0) {
- /* We may additionally check if the value is either "true" or "false" */
- printf("- Admin: %.*s\n", t[i + 1].end - t[i + 1].start,
- JSON_STRING + t[i + 1].start);
- i++;
- } else if (jsoneq(JSON_STRING, &t[i], "uid") == 0) {
- /* We may want to do strtol() here to get numeric value */
- printf("- UID: %.*s\n", t[i + 1].end - t[i + 1].start,
- JSON_STRING + t[i + 1].start);
- i++;
- } else if (jsoneq(JSON_STRING, &t[i], "groups") == 0) {
- int j;
- printf("- Groups:\n");
- if (t[i + 1].type != JSMN_ARRAY) {
- continue; /* We expect groups to be an array of strings */
- }
- for (j = 0; j < t[i + 1].size; j++) {
- jsmntok_t *g = &t[i + j + 2];
- printf(" * %.*s\n", g->end - g->start, JSON_STRING + g->start);
- }
- i += t[i + 1].size + 1;
- } else {
- printf("Unexpected key: %.*s\n", t[i].end - t[i].start,
- JSON_STRING + t[i].start);
- }
- }
- return EXIT_SUCCESS;
-}
Powered by cgit, Themed by Ted Yin.