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authorGravatar Christian Hesse <mail@eworm.de>2013-07-11 02:09:45 +0200
committerGravatar Christian Hesse <mail@eworm.de>2013-07-11 02:09:45 +0200
commitcb3cea717db21a787228eeb2eca9bc6c24f52566 (patch)
tree8092373870eb3d7223f0501706c0d7eb73c6fea0 /cqrlogo.c
parent8f4ae4338662e8ab26aca95b551756242727d45e (diff)
downloadcqrlogo-cb3cea717db21a787228eeb2eca9bc6c24f52566.tar.gz
cqrlogo-cb3cea717db21a787228eeb2eca9bc6c24f52566.tar.zst
allow to change error correction level at runtime0.2.2
Diffstat (limited to 'cqrlogo.c')
-rw-r--r--cqrlogo.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/cqrlogo.c b/cqrlogo.c
index fa0e865..2bf24a9 100644
--- a/cqrlogo.c
+++ b/cqrlogo.c
@@ -117,13 +117,13 @@ void bitmap_free(struct bitmap_t * bitmap) {
}
/*** encode_qrcode ***/
-struct bitmap_t * encode_qrcode (char *text, int scale, int border) {
+struct bitmap_t * encode_qrcode (char *text, unsigned int scale, unsigned int border, unsigned int level) {
QRcode *qrcode;
struct bitmap_t *bitmap, *scaled;
int i, j, k, l;
unsigned char *data;
- qrcode = QRcode_encodeData(strlen(text), (unsigned char *)text, 0, QRCODE_LEVEL);
+ qrcode = QRcode_encodeData(strlen(text), (unsigned char *)text, 0, level);
if (qrcode == NULL)
return NULL;
@@ -168,7 +168,7 @@ int main(int argc, char **argv) {
struct bitmap_t * bitmap;
char *match = NULL;
- unsigned int scale = QRCODE_SCALE, border = QRCODE_BORDER;
+ unsigned int scale = QRCODE_SCALE, border = QRCODE_BORDER, level = QRCODE_LEVEL;
/* get query string for later use */
char * query_string = getenv("QUERY_STRING");
@@ -213,10 +213,16 @@ int main(int argc, char **argv) {
if ((sscanf(match, "border=%u", &border)) > 0)
if (border > QRCODE_MAX_BORDER)
border = QRCODE_BORDER;
+
+ /* error correction level? */
+ if ((match = strstr(query_string, "level=")) != NULL)
+ if ((sscanf(match, "level=%u", &level)) > 0)
+ if (level > QR_ECLEVEL_H)
+ level = QRCODE_LEVEL;
}
- if ((bitmap = encode_qrcode(http_referer, scale, border)) == NULL) {
- if ((bitmap = encode_qrcode(server_name, scale, border)) == NULL) {
+ if ((bitmap = encode_qrcode(http_referer, scale, border, level)) == NULL) {
+ if ((bitmap = encode_qrcode(server_name, scale, border, level)) == NULL) {
fprintf(stderr, "Could not generate QR-Code.\n");
return EXIT_FAILURE;
}