cleaned up the cli

BUGS

@@ -0,0 +1 @@
+- Newlines in multi-line comments arent converted into <br/>s

README.md

@@ -66,4 +66,4 @@ if `table_mode` were `1`, then the output would have been:
 ```
 the color doesn't come with the generated HTML, you need to add it yourself using CSS. There's an example CSS style provided in `style.css`, inspired by the Sublime Text color theme I use.
 
-Since the generated class names of the HTML tags are pretty generic (`identifier`, `operator`, `comment`, ..), you can specify a prefix to be prepented to these names. 
+Since the generated class names of the HTML tags are pretty generic (`identifier`, `operator`, `comment`, ..) they may conflict with your own CSS code. To avoid this problem you can specify a prefix to be prepented to these names. The command-line interface `c2h` uses the `c2h-` previx.

cli.c

@@ -1,3 +1,4 @@
+#include <stdbool.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
@@ -29,45 +30,119 @@ static char *load_file(const char *file, long *size)
     return data;
 }
 
-int main(int argc, char **argv)
+static int fileconv(const char *input_file, const char *output_file, 
+                    const char *style_file, const char *prefix, bool notable)
 {
-    if(argc < 3) {
+    if(input_file == NULL || output_file == NULL) {
-        fprintf(stderr, "ERROR: Missing input and output file\n");
+        fprintf(stderr, 
-        return -1;
+            "Error: You must specify both input and output "
-    }
+            "files using the --input and --output options\n");
-    char *src_file = argv[1];
-    char *dst_file = argv[2];
-
-    long  src_size;
-    char *src_data = load_file(src_file, &src_size);
-
-    if(src_data == NULL) {
-        fprintf(stderr, "ERROR: Failed to open \"%s\"\n", src_file);
         return -1;
     }
 
-    _Bool table_mode = 0;
+    /* Load the input string */
-    const char *class_prefix = "c2h-";
+    long  input_size;
+    char *input = load_file(input_file, &input_size);
+    if(input == NULL) {
+        fprintf(stderr, "Error: Failed to open file %s\n", input_file);
+        return -1;
+    }
 
+    /* Convert it */
     const char *error;
-    char *dst_data = c2html(src_data, src_size, table_mode, class_prefix, &error);
+    char *output = c2html(input, input_size, 
-
+                   !notable, prefix, &error);
-    if(dst_data == NULL)
+    if(output == NULL) {
-        fprintf(stderr, "ERROR: %s\n", error);
+        fprintf(stderr, "Error: %s\n", error);
-    else {
+        free(input);
-
+        return -1;
-        FILE *fp = fopen(dst_file, "wb");
-        if(fp == NULL)
-            fprintf(stderr, "ERROR: Failed to open \"%s\"\n", dst_file);
-        else {
-            fwrite(dst_data, 1, strlen(dst_data), fp);
-            fclose(fp);
-            fprintf(stderr, "OK\n");
-        }
-
-        free(dst_data);
     }
 
-    free(src_data);
+    /* Open the output file */
+    FILE *fp = fopen(output_file, "wb");
+    if(fp == NULL) {
+        fprintf(stderr, "ERROR: Failed to write to file %s\n", 
+                output_file);
+        free(output);
+        free(input);
+        return -1;
+    }
+
+    if(style_file != NULL) {
+        char *style_data = load_file(style_file, NULL);
+        if(style_data == NULL) {
+            fprintf(stderr, "Error: Failed to open file %s\n", 
+                    style_file);
+            free(output);
+            free(input);
+            return -1;
+        }
+        fputs("<style>", fp);
+        fputs(style_data, fp);
+        fputs("</style>", fp);
+        free(style_data);
+    }
+
+    /* ..and write the converted string to it */
+    fwrite(output, 1, strlen(output), fp);
+    fclose(fp);
+    fprintf(stderr, "OK\n");
+
+    /* All done! :^) */
+    free(output);
+    free(input);
     return 0;
 }
+
+int main(int argc, char **argv)
+{
+
+    /* Parse command-line arguments */
+    char *input_file = NULL, 
+        *output_file = NULL,
+         *style_file = NULL,
+             *prefix = NULL;
+    bool     notable = 0;
+    bool        http = 0;
+    for(int i = 1; i < argc; i += 1) {
+        if(!strcmp(argv[i], "-i") || !strcmp(argv[i], "--input")) {
+            i += 1;
+            if(i == argc || argv[i][0] == '-') {
+                fprintf(stderr, "Error: Missing argument after %s\n", argv[i-1]);
+                return -1;
+            }
+            input_file = argv[i];
+        } else if(!strcmp(argv[i], "-o") || !strcmp(argv[i], "--output")) {
+            i += 1;
+            if(i == argc || argv[i][0] == '-') {
+                fprintf(stderr, "Error: Missing argument after %s\n", argv[i-1]);
+                return -1;
+            }
+            output_file = argv[i];
+        } else if(!strcmp(argv[i], "-p") || !strcmp(argv[i], "--prefix")) {
+            i += 1;
+            if(i == argc || argv[i][0] == '-') {
+                fprintf(stderr, "Error: Missing argument after %s\n", argv[i-1]);
+                return -1;
+            }
+            prefix = argv[i];
+        } else if(!strcmp(argv[i], "--no-table")) {
+            notable = 1;
+        } else if(!strcmp(argv[i], "--style")) {
+            i += 1;
+            if(i == argc || argv[i][0] == '-') {
+                fprintf(stderr, "Error: Missing argument after %s\n", argv[i-1]);
+                return -1;
+            }
+            style_file = argv[i];
+        } else if(!strcmp(argv[i], "--http")) {
+            http = 1;
+        } else {
+            fprintf(stderr, "Error: Unknown option %s\n", argv[i]);
+            return -1;
+        }
+    }
+
+    return fileconv(input_file, output_file, 
+                    style_file, prefix, notable);
+}

example.c

@@ -22,7 +22,11 @@ int main()
       "}\n";
 
     char *html = c2html(c, strlen(c), table_mode, prefix, NULL);
+
+    /* .. check for errors .. */
+    
     printf("%s\n", html);
+    
     free(html);
     return 0;
 }

style.css

@@ -1,13 +1,18 @@
 
+    div.c2h-main {
+    }
+
     div.c2h-code {
-        max-height: 80vh;
+        max-height: 600px;
-        margin: 50px;
+
+        padding: 10px;
         border-radius: 3px;
-        color: white;
+
         font-family: monospace;
         font-size: 16px;
+
+        color: white;
         background: hsl(210, 15%, 22%);
-        padding: 10px;
     }
 
     div.c2h-code-inner::-webkit-scrollbar {
@@ -21,6 +26,7 @@
 
     div.c2h-code-inner {
         overflow: auto;
+        height: inherit;
         max-height: inherit;
         scrollbar-color: hsla(210, 13%, 40%, 0.7) transparent;
     }
@@ -32,6 +38,7 @@
 
     div.c2h-code table td {
         color: white;
+        vertical-align: top;
     }
 
     div.c2h-code table td:first-child {