void usage(void);
int convert_numeric_option(char, int);
void convert_code_point_range(char, unsigned *, unsigned *);
+unsigned str_to_code_point(const char *, char **);
void convert_size(char, unsigned *, unsigned *);
unsigned round_to_pot(unsigned);
void *alloc_image_data(size_t, size_t);
if(err)
return 1;
+ if(!font.n_glyphs)
+ {
+ fprintf(stderr, "No glyphs found in the requested range\n");
+ return 1;
+ }
+
if(pack)
err = render_packed(&font, margin, padding);
else
return;
}
- value = strtol(optarg, &ptr, 0);
+ value = str_to_code_point(optarg, &ptr);
if(value>0 && *ptr==',')
{
*begin = value;
- value = strtol(ptr+1, &ptr, 0);
+ value = str_to_code_point(ptr+1, &ptr);
if(value>0 && !*ptr)
{
*end = value;
exit(1);
}
+unsigned str_to_code_point(const char *nptr, char **endptr)
+{
+ if(nptr[0]=='U' && nptr[1]=='+')
+ return strtoul(nptr+2, endptr, 16);
+ else if(nptr[0]&0x80)
+ {
+ unsigned bytes;
+ unsigned code;
+ unsigned i;
+
+ if(endptr)
+ *endptr = (char *)nptr;
+
+ for(bytes=1; (bytes<4 && (nptr[0]&(0x80>>bytes))); ++bytes)
+ if((nptr[bytes]&0xC0)!=0x80)
+ return 0;
+ if(bytes<2)
+ return 0;
+
+ code = nptr[0]&(0x3F>>bytes);
+ for(i=1; i<bytes; ++i)
+ code = (code<<6)|(nptr[i]&0x3F);
+
+ if(endptr)
+ *endptr = (char *)nptr+bytes;
+
+ return code;
+ }
+ else if(isdigit(nptr[0]))
+ return strtoul(nptr, endptr, 0);
+ else
+ {
+ if(endptr)
+ *endptr = (char *)nptr+1;
+ return *nptr;
+ }
+}
+
void convert_size(char opt, unsigned *width, unsigned *height)
{
int value;