--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/jansson/doc/html/_downloads/github_commits.c Wed Oct 29 17:55:16 2014 +0100
@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2009-2014 Petri Lehtinen <[email protected]>
+ *
+ * Jansson is free software; you can redistribute it and/or modify
+ * it under the terms of the MIT license. See LICENSE for details.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <jansson.h>
+#include <curl/curl.h>
+
+#define BUFFER_SIZE (256 * 1024) /* 256 KB */
+
+#define URL_FORMAT "https://api.github.com/repos/%s/%s/commits"
+#define URL_SIZE 256
+
+/* Return the offset of the first newline in text or the length of
+ text if there's no newline */
+static int newline_offset(const char *text)
+{
+ const char *newline = strchr(text, '\n');
+ if(!newline)
+ return strlen(text);
+ else
+ return (int)(newline - text);
+}
+
+struct write_result
+{
+ char *data;
+ int pos;
+};
+
+static size_t write_response(void *ptr, size_t size, size_t nmemb, void *stream)
+{
+ struct write_result *result = (struct write_result *)stream;
+
+ if(result->pos + size * nmemb >= BUFFER_SIZE - 1)
+ {
+ fprintf(stderr, "error: too small buffer\n");
+ return 0;
+ }
+
+ memcpy(result->data + result->pos, ptr, size * nmemb);
+ result->pos += size * nmemb;
+
+ return size * nmemb;
+}
+
+static char *request(const char *url)
+{
+ CURL *curl = NULL;
+ CURLcode status;
+ struct curl_slist *headers = NULL;
+ char *data = NULL;
+ long code;
+
+ curl_global_init(CURL_GLOBAL_ALL);
+ curl = curl_easy_init();
+ if(!curl)
+ goto error;
+
+ data = malloc(BUFFER_SIZE);
+ if(!data)
+ goto error;
+
+ struct write_result write_result = {
+ .data = data,
+ .pos = 0
+ };
+
+ curl_easy_setopt(curl, CURLOPT_URL, url);
+
+ /* GitHub commits API v3 requires a User-Agent header */
+ headers = curl_slist_append(headers, "User-Agent: Jansson-Tutorial");
+ curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_response);
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, &write_result);
+
+ status = curl_easy_perform(curl);
+ if(status != 0)
+ {
+ fprintf(stderr, "error: unable to request data from %s:\n", url);
+ fprintf(stderr, "%s\n", curl_easy_strerror(status));
+ goto error;
+ }
+
+ curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &code);
+ if(code != 200)
+ {
+ fprintf(stderr, "error: server responded with code %ld\n", code);
+ goto error;
+ }
+
+ curl_easy_cleanup(curl);
+ curl_slist_free_all(headers);
+ curl_global_cleanup();
+
+ /* zero-terminate the result */
+ data[write_result.pos] = '\0';
+
+ return data;
+
+error:
+ if(data)
+ free(data);
+ if(curl)
+ curl_easy_cleanup(curl);
+ if(headers)
+ curl_slist_free_all(headers);
+ curl_global_cleanup();
+ return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+ size_t i;
+ char *text;
+ char url[URL_SIZE];
+
+ json_t *root;
+ json_error_t error;
+
+ if(argc != 3)
+ {
+ fprintf(stderr, "usage: %s USER REPOSITORY\n\n", argv[0]);
+ fprintf(stderr, "List commits at USER's REPOSITORY.\n\n");
+ return 2;
+ }
+
+ snprintf(url, URL_SIZE, URL_FORMAT, argv[1], argv[2]);
+
+ text = request(url);
+ if(!text)
+ return 1;
+
+ root = json_loads(text, 0, &error);
+ free(text);
+
+ if(!root)
+ {
+ fprintf(stderr, "error: on line %d: %s\n", error.line, error.text);
+ return 1;
+ }
+
+ if(!json_is_array(root))
+ {
+ fprintf(stderr, "error: root is not an array\n");
+ json_decref(root);
+ return 1;
+ }
+
+ for(i = 0; i < json_array_size(root); i++)
+ {
+ json_t *data, *sha, *commit, *message;
+ const char *message_text;
+
+ data = json_array_get(root, i);
+ if(!json_is_object(data))
+ {
+ fprintf(stderr, "error: commit data %d is not an object\n", (int)(i + 1));
+ json_decref(root);
+ return 1;
+ }
+
+ sha = json_object_get(data, "sha");
+ if(!json_is_string(sha))
+ {
+ fprintf(stderr, "error: commit %d: sha is not a string\n", (int)(i + 1));
+ return 1;
+ }
+
+ commit = json_object_get(data, "commit");
+ if(!json_is_object(commit))
+ {
+ fprintf(stderr, "error: commit %d: commit is not an object\n", (int)(i + 1));
+ json_decref(root);
+ return 1;
+ }
+
+ message = json_object_get(commit, "message");
+ if(!json_is_string(message))
+ {
+ fprintf(stderr, "error: commit %d: message is not a string\n", (int)(i + 1));
+ json_decref(root);
+ return 1;
+ }
+
+ message_text = json_string_value(message);
+ printf("%.8s %.*s\n",
+ json_string_value(sha),
+ newline_offset(message_text),
+ message_text);
+ }
+
+ json_decref(root);
+ return 0;
+}