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#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <limits.h>
#include <getopt.h>
#include <qr/bitmap.h>
#include <qr/code.h>
#include <qr/data.h>
#include "qr-bitstream.h"
#include "code-common.h"
struct config {
int version;
enum qr_ec_level ec;
enum qr_data_type dtype;
int ansi;
const char * input;
};
struct qr_code * create(int version,
enum qr_ec_level ec,
enum qr_data_type dtype,
const char * input)
{
struct qr_data * data;
struct qr_code * code;
size_t len;
len = strlen(input);
data = qr_create_data(version, ec, dtype, input, len);
if (!data) {
/* BUG: this could also indicate OOM or
* some other error.
*/
fprintf(stderr, "Invalid data\n");
exit(1);
}
code = qr_code_create(data);
if (!code) {
perror("Failed to create code");
qr_free_data(data);
exit(2);
}
return code;
}
void output_pbm(const struct qr_bitmap * bmp, const char * comment)
{
unsigned char * row;
int x, y;
puts("P1");
if (comment)
printf("# %s\n", comment);
printf("%u %u\n",
(unsigned)bmp->width + 8,
(unsigned)bmp->height + 8);
row = bmp->bits;
for (y = -4; y < (int)bmp->height + 4; ++y) {
if (y < 0 || y >= (int)bmp->height) {
for (x = 0; x < (int)bmp->width + 8; ++x)
printf("0 ");
putchar('\n');
continue;
}
printf("0 0 0 0 ");
for (x = 0; x < (int)bmp->width; ++x) {
int mask = 1 << x % CHAR_BIT;
int byte = row[x / CHAR_BIT];
printf("%c ", (byte & mask) ? '1' : '0');
}
puts("0 0 0 0");
row += bmp->stride;
}
}
void output_ansi(const struct qr_bitmap * bmp)
{
const char * out[2] = {
" ",
"\033[7m \033[0m",
};
unsigned char * line;
int x, y;
line = bmp->bits;
for (y = 0; y < bmp->height; ++y) {
for (x = 0; x < bmp->width; ++x) {
int mask = 1 << (x % CHAR_BIT);
int byte = line[x / CHAR_BIT];
printf("%s", out[!!(byte & mask)]);
}
putchar('\n');
line += bmp->stride;
}
}
void show_help() {
fprintf(stderr,
"Usage:\n\t%s [options] <data>\n\n"
"\t-h Display this help message\n"
"\t-v <n> Specify QR version (size) 1 <= n <= 40\n"
"\t-e <type> Specify EC type: L, M, Q, H\n"
"\t-a Output as ANSI graphics (default)\n"
"\t-p Output as PBM\n\n",
"qrgen");
}
void set_default_config(struct config * conf)
{
conf->version = 0;
conf->ec = QR_EC_LEVEL_M;
conf->dtype = QR_DATA_NUMERIC;
conf->ansi = 1;
conf->input = NULL;
}
void parse_options(int argc, char ** argv, struct config * conf)
{
int c;
for (;;) {
c = getopt(argc, argv, ":hv:e:t:ap");
if (c == -1) /* no more options */
break;
switch (c) {
case 'h': /* help */
show_help();
exit(0);
break;
case 'v': /* version */
conf->version = atoi(optarg);
if (conf->version < 1 || conf->version > 40) {
fprintf(stderr,
"Version must be between 1 and 40\n");
exit(1);
}
break;
case 'e': /* ec */
switch (tolower(optarg[0])) {
case 'l': conf->ec = QR_EC_LEVEL_L; break;
case 'm': conf->ec = QR_EC_LEVEL_M; break;
case 'q': conf->ec = QR_EC_LEVEL_Q; break;
case 'h': conf->ec = QR_EC_LEVEL_H; break;
default:
fprintf(stderr,
"Invalid EC type (%c). Choose from"
" L, M, Q or H.\n", optarg[0]);
}
break;
case 't': /* type */
fprintf(stderr, "XXX: ignored \"type\"\n");
break;
case 'a': /* ansi */
conf->ansi = 1; break;
case 'p': /* pnm */
conf->ansi = 0; break;
case ':':
fprintf(stderr,
"Argument \"%s\" missing parameter\n",
argv[optind-1]);
exit(1);
break;
case '?': default:
fprintf(stderr,
"Invalid argument: \"%s\"\n"
"Try -h for help\n",
argv[optind-1]);
exit(1);
break;
}
}
if (optind < argc)
conf->input = argv[optind++];
if (!conf->input) {
fprintf(stderr, "No data (try -h for help)\n");
exit(1);
}
}
int main(int argc, char ** argv) {
struct config conf;
struct qr_code * code;
set_default_config(&conf);
parse_options(argc, argv, &conf);
code = create(conf.version,
conf.ec,
conf.dtype,
conf.input);
if (conf.ansi)
output_ansi(code->modules);
else
output_pbm(code->modules, "qrgen v0.1");
qr_code_destroy(code);
return 0;
}
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