string replace!

src/main.c

@@ -1,6 +1,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include "string.h"
 #include "parsers/json.h"
 
 typedef enum {
@@ -18,7 +19,7 @@ MediaType read_media_type(char *name) {
 }
 
 void print_help() {
-    printf("usage: compile <-t media_type> <-i input_file> [output_file]\n");
+    printf("usage: compile <-t media_type> <-j json_file> <-h html_file> [output_file]\n");
     printf("valid media types: music, art, blog\n");
     printf("if output_file is not specified, the output will be written to stdout.\n");
 }
@@ -30,7 +31,8 @@ int main(int argc, char **argv) {
     }
 
     MediaType media_type = -1;
-    FILE *input_file = NULL;
+    FILE *json_file = NULL;
+    FILE *html_file = NULL;
     size_t optind = 0;
 
     for (optind = 1; optind < argc && argv[optind][0] == '-'; optind++) {
@@ -43,13 +45,24 @@ int main(int argc, char **argv) {
                     exit(EXIT_FAILURE);
                 }
                 break;
-            case 'i':
+            case 'j':
                 if (optind++ >= argc) {
-                    fprintf(stderr, "-i was passed, but no file path was given!\n\n");
+                    fprintf(stderr, "-j was passed, but no file path was given!\n\n");
                     exit(EXIT_FAILURE);
                 }
-                input_file = fopen(argv[optind], "r");
+                json_file = fopen(argv[optind], "r");
-                if (input_file == NULL) {
+                if (json_file == NULL) {
+                    fprintf(stderr, "failed to open file %s!\n\n", argv[optind]);
+                    exit(EXIT_FAILURE);
+                }
+                break;
+            case 'h':
+                if (optind++ >= argc) {
+                    fprintf(stderr, "-h was passed, but no file path was given!\n\n");
+                    exit(EXIT_FAILURE);
+                }
+                html_file = fopen(argv[optind], "r");
+                if (html_file == NULL) {
                     fprintf(stderr, "failed to open file %s!\n\n", argv[optind]);
                     exit(EXIT_FAILURE);
                 }
@@ -65,44 +78,72 @@ int main(int argc, char **argv) {
         print_help();
         exit(EXIT_FAILURE);
     }
-    if (input_file == NULL) {
+    if (json_file == NULL) {
-        fprintf(stderr, "input file not provided!\n\n");
+        fprintf(stderr, "JSON file not provided!\n\n");
+        print_help();
+        exit(EXIT_FAILURE);
+    }
+    if (html_file == NULL) {
+        fprintf(stderr, "HTML file not provided!\n\n");
         print_help();
         exit(EXIT_FAILURE);
     }
 
     // get length of file
-    fseek(input_file, (long)-sizeof(char), SEEK_END);
+    fseek(json_file, (long)-sizeof(char), SEEK_END);
-    size_t length = ftell(input_file);
+    size_t json_length = ftell(json_file);
-    fseek(input_file, 0, SEEK_SET);
+    fseek(json_file, 0, SEEK_SET);
 
     // read file to buffer
-    char buf[length + 1];
+    char json_buf[json_length + 1];
-    fread(buf, 1, length, input_file);
+    fread(json_buf, 1, json_length, json_file);
-    buf[length] = '\0';
+    json_buf[json_length] = '\0';
 
     // parse the file
     size_t offset = 0;
-    JsonObject *json = json_parse(buf, &offset);
+    JsonObject *json = json_parse(json_buf, &offset);
     if (json == NULL) {
         fprintf(stderr, "failed to parse input file!\n");
         exit(EXIT_FAILURE);
     }
 
-    printf("title: %s\n", (char*)((JsonObject*)json_get(json, "title"))->value);
+    char *title = (char*)((JsonObject*)json_get(json, "title"))->value;
-    printf("type: %s\n", (char*)((JsonObject*)json_get(json, "type"))->value);
+    char *type = (char*)((JsonObject*)json_get(json, "type"))->value;
-    printf("year: %.0f\n", *(float*)((JsonObject*)json_get(json, "year"))->value);
+    float year = *(float*)((JsonObject*)json_get(json, "year"))->value;
-    printf("artwork: %s\n", (char*)((JsonObject*)json_get(json, "artwork"))->value);
+    char *artwork = (char*)((JsonObject*)json_get(json, "artwork"))->value;
-    printf("buylink: %s\n", (char*)((JsonObject*)json_get(json, "buylink"))->value);
+    char *buylink = (char*)((JsonObject*)json_get(json, "buylink"))->value;
+    printf("title: %s\n", title);
+    printf("type: %s\n", type);
+    printf("year: %.0f\n", year);
+    printf("artwork: %s\n", artwork);
+    printf("buylink: %s\n", buylink);
 
     JsonObject *links = (JsonObject*)json_get(json, "links");
     for (size_t i = 0; i < links->length; i++) {
         char path[256];
         sprintf(path, "links.%zu.title", i);
-        printf("%s: %s\n", path, (char*)((JsonObject*)json_get(json, path))->value);
+        char *title = (char*)((JsonObject*)json_get(json, path))->value;
         sprintf(path, "links.%zu.url", i);
-        printf("%s: %s\n", path, (char*)((JsonObject*)json_get(json, path))->value);
+        char *url = (char*)((JsonObject*)json_get(json, path))->value;
+        printf("links.%zu.title: %s\n", i, title);
+        printf("links.%zu.url: %s\n", i, url);
     }
 
+    // get length of file
+    fseek(html_file, (long)-sizeof(char), SEEK_END);
+    size_t html_length = ftell(html_file);
+    fseek(html_file, 0, SEEK_SET);
+
+    // read file to buffer
+    char html_buf[html_length + 1];
+    fread(html_buf, 1, html_length, html_file);
+    html_buf[html_length] = '\0';
+
+    char *html_out = strrep(html_buf, "{title}", title);
+
+    printf("%s\n", html_out);
+
+    json_free(json);
+
     return 0;
 }

src/parsers/json.c

@@ -217,6 +217,7 @@ JsonObject *json_parse(char *data, size_t *offset) {
         if (data[i] != ':') {
             json_log("error: ':' does not succeed attribute definition", data, i);
             free(name);
+            name = NULL;
             return NULL;
         }
         i++;
@@ -226,6 +227,7 @@ JsonObject *json_parse(char *data, size_t *offset) {
 
         if (value == NULL) {
             free(name);
+            name = NULL;
             return NULL;
         }
 
@@ -237,6 +239,7 @@ JsonObject *json_parse(char *data, size_t *offset) {
             obj = malloc(sizeof(JsonObject));
             obj->name = name;
             obj->type = type;
+            if (type != array)
                 obj->value = value;
             if (type == array) {
                 obj->children = value;
@@ -344,13 +347,22 @@ void json_free(JsonObject *object) {
 
     if (object->children != NULL) {
         json_free(object->children);
+        object->children = NULL;
     }
     if (object->next != NULL) {
         json_free(object->next);
+        object->next = NULL;
     }
 
-    if (object->name != NULL) free(object->name);
+    if (object->name != NULL) {
-    if (object->value != NULL) free(object->value);
+        free(object->name);
+        object->name = NULL;
+    }
+    if (object->value != NULL) {
+        free(object->value);
+        object->value = NULL;
+    }
 
     free(object);
+    object = NULL;
 }

src/string.c

@@ -0,0 +1,45 @@
+#include "string.h"
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+char *strrep(char *src, char *target, char *replace) {
+    size_t src_len = strlen(src);
+    size_t target_len = strlen(target);
+    size_t replace_len = strlen(replace);
+    size_t count;
+    size_t start;
+    char *result;
+    char *tmp;
+    char *find;
+    
+    find = src;
+    for (count = 0; (tmp = strstr(find, target)); ++count) {
+        find = tmp + target_len;
+    }
+
+    if (count == 0) {
+        return src;
+    }
+
+    tmp = result = malloc(sizeof(char) * ( src_len + (replace_len - target_len) + 1 ));
+
+    if (!result) return NULL;
+
+    while (count--) {
+        // find replacement point
+        start = strstr(src, target) - src;
+        // copy pre-target
+        tmp = strncpy(tmp, src, start) + start;
+        // printf("PRE-TARGET:\n%s\n\n", result);
+        // copy replacement
+        tmp = strcpy(tmp, replace) + replace_len;
+        // printf("REPLACE:\n%s\n\n", result);
+        // copy post-replacement
+        strcpy(tmp, src + start + target_len);
+        // printf("POST-REPLACE:\n%s\n\n", result);
+        src += start + target_len;
+    }
+
+    return result;
+}

src/string.h

@@ -0,0 +1,8 @@
+#ifndef _def_string_utils
+#define _def_string_utils
+
+#include <stdlib.h>
+
+char *strrep(char *src, char *target, char *replace);
+
+#endif // _def_string_utils

src/templater/html.c

@@ -0,0 +1 @@
+#include "html.h"

src/templater/html.h

@@ -0,0 +1,4 @@
+#ifndef _def_html_templater
+#define _def_html_templater
+
+#endif // _def_html_templater

test.html

@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="UTF-8">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <title>{title}</title>
+        <link href="css/style.css" rel="stylesheet">
+    </head>
+    <body>
+        <h1>{title}</h1>
+    </body>
+</html>