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Add src/theme/xbm/parse.c

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This commit is contained in:
Johan Malm 2020-06-23 07:17:07 +01:00
parent d80a7b518f
commit f86394a997
7 changed files with 125 additions and 13 deletions
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70
src/theme/xbm/parse.c Normal file
View file

@ -0,0 +1,70 @@
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "buf.h"
#include "xbm.h"
static void process_bytes(int height, int width, struct token *tokens)
{
struct token *t = tokens;
for (int row = 0; row < height; row++) {
int byte = 1;
for (int col = 0; col < width; col++) {
if (col == byte * 8) {
++byte;
++t;
}
if (!t->type)
return;
int value = (int)strtol(t->name, NULL, 0);
int bit = 1 << (col % 8);
if (value & bit)
printf(".");
else
printf(" ");
}
++t;
printf("\n");
}
}
void xbm_create_bitmap(struct token *tokens)
{
int width = 0, height = 0;
for (struct token *t = tokens; t->type; t++) {
if (width && height) {
if (t->type != TOKEN_INT)
continue;
process_bytes(width, height, t);
return;
}
if (strstr(t->name, "width"))
width = atoi((++t)->name);
else if (strstr(t->name, "height"))
height = atoi((++t)->name);
}
}
char *xbm_read_file(const char *filename)
{
char *line = NULL;
size_t len = 0;
FILE *stream = fopen(filename, "r");
if (!stream) {
fprintf(stderr, "warn: cannot read '%s'\n", filename);
return NULL;
}
struct buf buffer;
buf_init(&buffer);
while ((getline(&line, &len, stream) != -1)) {
char *p = strrchr(line, '\n');
if (p)
*p = '\0';
buf_add(&buffer, line);
}
free(line);
fclose(stream);
return (buffer.buf);
}

19
src/theme/xbm/tokenize.c
View file

@ -31,8 +31,9 @@ static void get_identifier_token()
switch (current_buffer_position[0]) {
case '\0':
return;
case 'a'...'z':
case 'A'...'Z':
case 'a' ... 'z':
case 'A' ... 'Z':
case '0' ... '9':
case '_':
case '#':
get_identifier_token();
@ -53,9 +54,9 @@ static void get_number_token()
switch (current_buffer_position[0]) {
case '\0':
return;
case '0'...'9':
case 'a'...'f':
case 'A'...'F':
case '0' ... '9':
case 'a' ... 'f':
case 'A' ... 'F':
case 'x':
get_number_token();
break;
@ -71,7 +72,7 @@ static void get_special_char_token()
current_buffer_position++;
}
struct token *tokenize(char *buffer)
struct token *xbm_tokenize(char *buffer)
{
current_buffer_position = buffer;
@ -79,14 +80,14 @@ struct token *tokenize(char *buffer)
switch (current_buffer_position[0]) {
case '\0':
goto out;
case 'a'...'z':
case 'A'...'Z':
case 'a' ... 'z':
case 'A' ... 'Z':
case '_':
case '#':
add_token(TOKEN_IDENT);
get_identifier_token();
continue;
case '0'...'9':
case '0' ... '9':
add_token(TOKEN_INT);
get_number_token();
continue;