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#include "../includes/compiler.h"
#include <stdio.h>
#include <string.h>
void compile_inner_text(string dest, string src, size_t size_of_line,
string line_or_source)
{
/* cursor is the current index on the dest pointer
* lower represents the last tag character before content
* upper represents the first tag character after content
*
* size_of_content is self explanatory (size of content in tags)
* tag_size is the compiled size of a tag
* md_tag_size is the precompiled size of a tag
*
* tag is the string for the open HTML tag
* close_tag is the string for the close HTML tag
*
* i and j are iterator variables
*/
int cursor, lower, upper;
size_t size_of_content, tag_size, md_tag_size;
string tag, close_tag;
int i, j;
lower = 0;
upper = 0;
cursor = 0;
for (i = 0; i < size_of_line; ++i)
{
// Asterisk routine
if (src[i] == '*')
{
j = i + 1;
// Twin asterisks
if (src[i + 1] == '*')
{
tag = "<strong>";
close_tag = "</strong>";
tag_size = 8;
md_tag_size = 2;
// Make j the cursor seeking for the matching asterisk pair
while ((j < size_of_line - 1) && (src[j] != '*' || src[j + 1] != '*'))
++j;
// if found
if (src[j] == '*')
{
lower = i + 1;
upper = j;
}
else
{
// ERROR
fprintf(stderr, "No matching asterisk for %s:%d\n", line_or_source,
i);
exit(-1);
}
}
// one asterisk
else
{
tag = "<i>";
close_tag = "</i>";
tag_size = 3;
md_tag_size = 1;
while ((j < size_of_line) && (src[j] != '*')) ++j;
if (src[j] == '*')
{
lower = i;
upper = j;
}
else
{
// error, no matching asterisk
fprintf(stderr, "No matching asterisk for %s:%d\n", line_or_source,
i);
exit(-1);
}
}
/*
* Copy all
*/
size_of_content = upper - lower - 1;
strncpy(dest + cursor, tag, tag_size);
strncpy(dest + cursor + tag_size, src + lower + 1, size_of_content);
strncpy(dest + cursor + tag_size + size_of_content, close_tag,
tag_size + 1);
cursor +=
tag_size + size_of_content + tag_size + 1; // shift after operation
i += size_of_content + (2 * md_tag_size) - 1;
}
else
{
strncpy(dest + cursor, &src[i], 1);
cursor += 1;
}
}
}
string compile_line(string line, size_t size_of_line, string line_or_source)
{
string compiled_line;
size_t size_of_content;
// Compile a header
if (line[0] == '#')
{
// Get the level of header (h1, h2, etc)
int depth;
for (depth = 1; line[depth] == '#'; ++depth) continue;
size_of_content = size_of_line - depth; // remove hashes
// Generate the header tags based on depth
const int tag_size = 4;
const int close_tag_size = 5;
string tag = malloc(sizeof(*tag) * 5);
sprintf(tag, "<h%d>", depth);
string close_tag = malloc(sizeof(*close_tag) * 6);
sprintf(close_tag, "</h%d>", depth);
// allocate buffer with extra 9 characters for the tags
compiled_line = malloc(sizeof(*compiled_line) *
(size_of_line + tag_size + close_tag_size + 3));
// write h1 to start of compiled_line
strncpy(compiled_line, tag, tag_size);
// write the rest of the line to the compiled_line
strncpy(compiled_line + tag_size, line + depth, size_of_line);
// write the end tags
strncpy(compiled_line + size_of_content + tag_size - 1, close_tag,
close_tag_size + 1);
}
// Compile a list item
else if (line[0] == '-')
{
string tag = "<li>";
string close_tag = "</li>";
size_of_content = size_of_line - 1;
compiled_line = malloc(sizeof(*compiled_line) * (size_of_line + 10));
strncpy(compiled_line, tag, 4);
strncpy(compiled_line + 4, line + 1, size_of_line);
strncpy(compiled_line + size_of_content + 4, close_tag, 5);
}
// Compile a standard piece of text
else
{
// Assume standard text
compiled_line = malloc(sizeof(*compiled_line) * size_of_line * 2);
compile_inner_text(compiled_line, line, size_of_line, line_or_source);
}
return compiled_line;
}
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