#include "image.h"
#include <string.h>
#include <stdlib.h>
+#include <errno.h>
+#include <limits.h>
/* useful for debugging */
void i_tags_print(i_img_tags *tags);
=cut
*/
-int i_tags_addn(i_img_tags *tags, char *name, int code, int idata) {
+int i_tags_addn(i_img_tags *tags, char const *name, int code, int idata) {
return i_tags_add(tags, name, code, NULL, 0, idata);
}
=cut
*/
-int i_tags_add(i_img_tags *tags, char *name, int code, char *data, int size,
- int idata) {
+int i_tags_add(i_img_tags *tags, char const *name, int code, char const *data,
+ int size, int idata) {
i_img_tag work = {0};
+ /*printf("i_tags_add(tags %p [count %d], name %s, code %d, data %p, size %d, idata %d)\n",
+ tags, tags->count, name, code, data, size, idata);*/
if (tags->tags == NULL) {
int alloc = 10;
tags->tags = mymalloc(sizeof(i_img_tag) * alloc);
work.idata = idata;
tags->tags[tags->count++] = work;
+ /*i_tags_print(tags);*/
+
return 1;
}
}
}
-int i_tags_find(i_img_tags *tags, char *name, int start, int *entry) {
+int i_tags_find(i_img_tags *tags, char const *name, int start, int *entry) {
if (tags->tags) {
while (start < tags->count) {
if (tags->tags[start].name && strcmp(name, tags->tags[start].name) == 0) {
}
int i_tags_delete(i_img_tags *tags, int entry) {
+ /*printf("i_tags_delete(tags %p [count %d], entry %d)\n",
+ tags, tags->count, entry);*/
if (tags->tags && entry >= 0 && entry < tags->count) {
i_img_tag old = tags->tags[entry];
memmove(tags->tags+entry, tags->tags+entry+1,
- tags->count-entry-1);
+ (tags->count-entry-1) * sizeof(i_img_tag));
if (old.name)
myfree(old.name);
if (old.data)
myfree(old.data);
--tags->count;
+
return 1;
}
return 0;
}
-int i_tags_delbyname(i_img_tags *tags, char *name) {
+int i_tags_delbyname(i_img_tags *tags, char const *name) {
int count = 0;
int i;
+ /*printf("i_tags_delbyname(tags %p [count %d], name %s)\n",
+ tags, tags->count, name);*/
if (tags->tags) {
for (i = tags->count-1; i >= 0; --i) {
if (tags->tags[i].name && strcmp(name, tags->tags[i].name) == 0) {
}
}
}
+ /*i_tags_print(tags);*/
+
return count;
}
return count;
}
-int i_tags_get_float(i_img_tags *tags, char *name, int code, double *value) {
+int i_tags_get_float(i_img_tags *tags, char const *name, int code,
+ double *value) {
int index;
i_img_tag *entry;
return 1;
}
-int i_tags_set_float(i_img_tags *tags, char *name, int code, double value) {
+int i_tags_set_float(i_img_tags *tags, char const *name, int code,
+ double value) {
char temp[40];
sprintf(temp, "%.30g", value);
return i_tags_add(tags, name, code, temp, strlen(temp), 0);
}
-int i_tags_get_int(i_img_tags *tags, char *name, int code, int *value) {
+int i_tags_get_int(i_img_tags *tags, char const *name, int code, int *value) {
int index;
i_img_tag *entry;
return 1;
}
-int i_tags_get_string(i_img_tags *tags, char *name, int code,
+static int parse_long(char *data, char **end, long *out) {
+#if 0
+ /* I wrote this without thinking about strtol */
+ long x = 0;
+ int neg = *data == '-';
+
+ if (neg)
+ ++data;
+ if (!isdigit(*data))
+ return 0;
+ while (isdigit(*data)) {
+ /* this check doesn't guarantee we don't overflow, but it helps */
+ if (x > LONG_MAX / 10)
+ return 0;
+ x = x * 10 + *data - '0';
+ ++data;
+ }
+ if (neg)
+ x = -x;
+
+ *end = data;
+
+ return 1;
+#else
+ long result;
+ int savederr = errno;
+ char *myend;
+
+ errno = 0;
+ result = strtol(data, &myend, 10);
+ if ((result == LONG_MIN || result == LONG_MAX) && errno == ERANGE
+ || myend == data) {
+ return 0;
+ }
+
+ *out = result;
+ *end = myend;
+
+ return 1;
+#endif
+}
+
+/* parse a comma-separated list of integers
+ returns when it has maxcount numbers, finds a non-comma after a number
+ or can't parse a number
+ if it can't parse a number after a comma, that's considered an error
+*/
+static int parse_long_list(char *data, char **end, int maxcount, long *out) {
+ int i;
+
+ while (i < maxcount-1) {
+ if (!parse_long(data, &data, out))
+ return 0;
+ out++;
+ i++;
+ if (*data != ',')
+ return i;
+ ++data;
+ }
+ if (!parse_long(data, &data, out))
+ return 0;
+ ++i;
+ *end = data;
+ return i;
+}
+
+/* parse "color(red,green,blue,alpha)" */
+static int parse_color(char *data, char **end, i_color *value) {
+ long n[4];
+ int count, i;
+
+ if (memcmp(data, "color(", 6))
+ return 0; /* not a color */
+ data += 6;
+ count = parse_long_list(data, &data, 4, n);
+ if (count < 3)
+ return 0;
+ for (i = 0; i < count; ++i)
+ value->channel[i] = n[i];
+ if (count < 4)
+ value->channel[3] = 255;
+
+ return 1;
+}
+
+int i_tags_get_color(i_img_tags *tags, char const *name, int code,
+ i_color *value) {
+ int index;
+ i_img_tag *entry;
+ char *end;
+
+ if (name) {
+ if (!i_tags_find(tags, name, 0, &index))
+ return 0;
+ }
+ else {
+ if (!i_tags_findn(tags, code, 0, &index))
+ return 0;
+ }
+ entry = tags->tags+index;
+ if (!entry->data)
+ return 0;
+
+ if (!parse_color(entry->data, &end, value))
+ return 0;
+
+ /* for now we're sloppy about the end */
+
+ return 1;
+}
+
+int i_tags_set_color(i_img_tags *tags, char const *name, int code,
+ i_color const *value) {
+ char temp[80];
+
+ sprintf(temp, "color(%d,%d,%d,%d)", value->channel[0], value->channel[1],
+ value->channel[2], value->channel[3]);
+ if (name)
+ i_tags_delbyname(tags, name);
+ else
+ i_tags_delbycode(tags, code);
+
+ return i_tags_add(tags, name, code, temp, strlen(temp), 0);
+}
+
+int i_tags_get_string(i_img_tags *tags, char const *name, int code,
char *value, size_t value_size) {
int index;
i_img_tag *entry;
i_img_tag *tag = tags->tags + i;
printf("Tag %d\n", i);
if (tag->name)
- printf(" Name : %s\n", tag->name);
+ printf(" Name : %s (%p)\n", tag->name, tag->name);
printf(" Code : %d\n", tag->code);
if (tag->data) {
int pos;
- printf(" Data : %d => '", tag->size);
+ printf(" Data : %d (%p) => '", tag->size, tag->data);
for (pos = 0; pos < tag->size; ++pos) {
if (tag->data[pos] == '\\' || tag->data[pos] == '\'') {
putchar('\\');
projects / imager.git / blobdiff