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[fc-lang] Support excluding characters 

By prefixing a line by a hyphen/minus sign.  Useful when including
other orth files.
This commit is contained in:
Behdad Esfahbod 2010-09-21 13:14:55 -04:00
parent 52960d05eb
commit 0a023b24da
1 changed files with 25 additions and 10 deletions
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35
fc-lang/fc-lang.c
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@ -76,10 +76,14 @@ fatal (const char *file, int lineno, const char *msg)
}
static char *
get_line (FILE *f, char *line, int *lineno)
get_line (FILE *f, char *buf, int *lineno)
{
char *hash;
char *line;
int end;
next:
line = buf;
if (!fgets (line, 1024, f))
return 0;
++(*lineno);
@ -87,12 +91,15 @@ get_line (FILE *f, char *line, int *lineno)
if (hash)
*hash = '\0';
while (line[0] && isspace (line[0]))
line++;
end = strlen (line);
while (end > 0 && isspace (line[end-1]))
line[--end] = '\0';
if (line[0] == '\0' || line[0] == '\n' || line[0] == '\032' || line[0] == '\r')
return get_line (f, line, lineno);
if (line[0] == '\0' || line[0] == '\n' || line[0] == '\r')
goto next;
return line;
}
@ -125,16 +132,18 @@ scanopen (char *file)
* Comments begin with '#'
*/
static const FcCharSet *
static FcCharSet *
scan (FILE *f, char *file, FcCharSetFreezer *freezer)
{
FcCharSet *c = 0;
FcCharSet *n;
FcBool del;
int start, end, ucs4;
char line[1024];
char buf[1024];
char *line;
int lineno = 0;
while (get_line (f, line, &lineno))
while ((line = get_line (f, buf, &lineno)))
{
if (!strncmp (line, "include", 7))
{
@ -158,6 +167,12 @@ scan (FILE *f, char *file, FcCharSetFreezer *freezer)
FcCharSetDestroy (n);
continue;
}
del = FcFalse;
if (line[0] == '-')
{
del = FcTrue;
line++;
}
if (strchr (line, '-'))
{
if (sscanf (line, "%x-%x", &start, &end) != 2)
@ -173,7 +188,7 @@ scan (FILE *f, char *file, FcCharSetFreezer *freezer)
c = FcCharSetCreate ();
for (ucs4 = start; ucs4 <= end; ucs4++)
{
if (!FcCharSetAddChar (c, ucs4))
if (!((del ? FcCharSetDelChar : FcCharSetAddChar) (c, ucs4)))
fatal (file, lineno, "out of memory");
}
}
@ -231,8 +246,8 @@ typedef struct _Entry {
static int compare (const void *a, const void *b)
{
const Entry const *as = a, *bs = b;
return FcStrCmpIgnoreCase (as->file, bs->file);
const Entry *as = a, *bs = b;
return FcStrCmpIgnoreCase ((const FcChar8 *) as->file, (const FcChar8 *) bs->file);
}
#define MAX_LANG 1024
@ -245,7 +260,7 @@ int
main (int argc, char **argv)
{
static Entry entries[MAX_LANG];
static const FcCharSet *sets[MAX_LANG];
static FcCharSet *sets[MAX_LANG];
static int duplicate[MAX_LANG];
static int country[MAX_LANG];
static char *names[MAX_LANG];