housecat_old/src/cms_post.c

#include <stdlib.h>
#include <stddef.h>
#include <string.h>

#include "cms_post.h"
#include "cms_err.h"

#define PREFIX_LENGTH 5

cms_post* cms_post_create()
{
	cms_post* post = malloc(sizeof(cms_post));
	post->_str = NULL;
	post->title = NULL;
	post->slug = NULL;
	post->html = NULL;
	return post;
}

cms_err* cms_post_parse(cms_post* post, char* str, char* slugstr)
{
	//Adding 1 because strlen() returns the length without \0
	size_t len = strlen(str) + 1;

	post->_str = malloc(len * sizeof(char));
	if (post->_str == NULL)
		return cms_err_create(CMS_ERR_ALLOC, NULL);

	memcpy(post->_str, str, len * sizeof(char));

	//The post's title will be the first line.
	post->title = post->_str;

	size_t line = 0;
	for (size_t i = 0; i < len; ++i)
	{
		char c = str[i];

		switch (c)
		{
		case '\n':
			line += 1;
			if (line == 2)
			{
				post->html = (post->_str + i + 1);
			}

			//falls through

		case '\r':
			post->_str[i] = '\0';
			break;
		}

		if (line == 2)
			break;
	}

	//Strip out the leading "xxxx-" from slugstr (the filename)
	//to get the real slug
	size_t slugstrlen = strlen(slugstr);
	post->slug = malloc((slugstrlen + 1 - PREFIX_LENGTH) * sizeof(char));
	if (post->slug == NULL)
		return cms_err_create(CMS_ERR_ALLOC, NULL);

	memcpy(post->slug, slugstr + PREFIX_LENGTH, (slugstrlen - PREFIX_LENGTH));

	//Add \0 to the end of the string
	post->slug[slugstrlen - PREFIX_LENGTH] = '\0';

	if (line >= 2)
		return cms_err_create(CMS_ERR_NONE, NULL);
	else
		return cms_err_create(CMS_ERR_PARSE, slugstr);
}