* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
- * documentation, and that the name of Keith Packard not be used in
+ * documentation, and that the name of the author(s) not be used in
* advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
+ * specific, written prior permission. The authors make no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
#include <stdarg.h>
-/*
+/* The language is documented in doc/fcformat.fncs
+ * These are the features implemented:
+ *
+ * simple %{elt}
+ * width %width{elt}
+ * index %{elt[idx]}
+ * name= %{elt=}
+ * :name= %{:elt}
+ * default %{elt:-word}
+ * count %{#elt}
+ * subexpr %{{expr}}
+ * filter-out %{-elt1,elt2,elt3{expr}}
+ * filter-in %{+elt1,elt2,elt3{expr}}
+ * conditional %{?elt1,elt2,!elt3{}{}}
+ * enumerate %{[]elt1,elt2{expr}}
+ * langset langset enumeration using the same syntax
+ * builtin %{=blt}
+ * convert %{elt|conv1|conv2|conv3}
+ *
+ * converters:
+ * basename FcStrBasename
+ * dirname FcStrDirname
+ * downcase FcStrDowncase
+ * shescape
+ * cescape
+ * xmlescape
+ * delete delete chars
+ * escape escape chars
+ * translate translate chars
+ *
+ * builtins:
+ * unparse FcNameUnparse
+ * fcmatch fc-match default
+ * fclist fc-list default
+ * pkgkit PackageKit package tag format
+ *
+ *
* Some ideas for future syntax extensions:
*
- * - array enumeration using '%{[]family,familylang{expr}|decorator}'
- * - langset enumeration using same syntax as array enumeration
- * - allow indexing simple tags using '%{elt[idx]}'
+ * - verbose builtin that is like FcPatternPrint
* - allow indexing subexprs using '%{[idx]elt1,elt2{subexpr}}'
+ * - allow indexing in +, -, ? filtering?
* - conditional/filtering/deletion on binding (using '(w)'/'(s)'/'(=)' notation)
*/
-/* fc-match needs '<unknown filename>', etc handling. */
-#define FCMATCH_FORMAT "%{file|basename}: \"%{family[0]}\" \"%{style[0]}\""
-#define FCLIST_FORMAT "%{?file{%{file}: }}%{=unparse}"
+#define FCMATCH_FORMAT "%{file:-<unknown filename>|basename}: \"%{family[0]:-<unknown family>}\" \"%{style[0]:-<unknown style>}\""
+#define FCLIST_FORMAT "%{?file{%{file}: }}%{-file{%{=unparse}}}"
+#define PKGKIT_FORMAT "%{[]family{font(%{family|downcase|delete( )})\n}}%{[]lang{font(:lang=%{lang|downcase|translate(_,-)})\n}}"
static void
else if (0 == strcmp ((const char *) c->word, name))\
do { new_str = func (pat); ret = FcTrue; } while (0)
BUILTIN ("unparse", FcNameUnparse);
- /* BUILTIN ("verbose", FcPatternPrint); */
+ /* BUILTIN ("verbose", FcPatternPrint); XXX */
#undef BUILTIN
else
ret = FcFalse;
ret = FcPatternFormatToBuf (pat, (const FcChar8 *) format, buf)
BUILTIN ("fcmatch", FCMATCH_FORMAT);
BUILTIN ("fclist", FCLIST_FORMAT);
+ BUILTIN ("pkgkit", PKGKIT_FORMAT);
#undef BUILTIN
else
ret = FcFalse;
}
static FcBool
-interpret_filter (FcFormatContext *c,
- FcPattern *pat,
- FcStrBuf *buf)
+interpret_filter_in (FcFormatContext *c,
+ FcPattern *pat,
+ FcStrBuf *buf)
{
FcObjectSet *os;
FcPattern *subpat;
do
{
+ /* XXX binding */
if (!read_word (c) ||
!FcObjectSetAdd (os, (const char *) c->word))
{
}
static FcBool
-interpret_delete (FcFormatContext *c,
- FcPattern *pat,
- FcStrBuf *buf)
+interpret_filter_out (FcFormatContext *c,
+ FcPattern *pat,
+ FcStrBuf *buf)
{
FcPattern *subpat;
pass = pass &&
(negate ^
- (FcResultMatch == FcPatternGet (pat,
- (const char *) c->word,
- 0, &v)));
+ (FcResultMatch ==
+ FcPatternGet (pat, (const char *) c->word, 0, &v)));
}
while (consume_char (c, ','));
return FcTrue;
}
+static FcBool
+interpret_enumerate (FcFormatContext *c,
+ FcPattern *pat,
+ FcStrBuf *buf)
+{
+ FcObjectSet *os;
+ FcPattern *subpat;
+ const FcChar8 *format_save;
+ int idx;
+ FcBool ret, done;
+ FcStrList *lang_strs;
+
+ if (!expect_char (c, '[') ||
+ !expect_char (c, ']'))
+ return FcFalse;
+
+ os = FcObjectSetCreate ();
+ if (!os)
+ return FcFalse;
+
+ ret = FcTrue;
+
+ do
+ {
+ if (!read_word (c) ||
+ !FcObjectSetAdd (os, (const char *) c->word))
+ {
+ FcObjectSetDestroy (os);
+ return FcFalse;
+ }
+ }
+ while (consume_char (c, ','));
+
+ /* If we have one element and it's of type FcLangSet, we want
+ * to enumerate the languages in it. */
+ lang_strs = NULL;
+ if (os->nobject == 1)
+ {
+ FcLangSet *langset;
+ if (FcResultMatch ==
+ FcPatternGetLangSet (pat, os->objects[0], 0, &langset))
+ {
+ FcStrSet *ss;
+ if (!(ss = FcLangSetGetLangs (langset)) ||
+ !(lang_strs = FcStrListCreate (ss)))
+ goto bail0;
+ }
+ }
+
+ subpat = FcPatternDuplicate (pat);
+ if (!subpat)
+ goto bail0;
+
+ format_save = c->format;
+ idx = 0;
+ do
+ {
+ int i;
+
+ done = FcTrue;
+
+ if (lang_strs)
+ {
+ FcChar8 *lang;
+
+ FcPatternDel (subpat, os->objects[0]);
+ if ((lang = FcStrListNext (lang_strs)))
+ {
+ /* XXX binding? */
+ FcPatternAddString (subpat, os->objects[0], lang);
+ done = FcFalse;
+ }
+ }
+ else
+ {
+ for (i = 0; i < os->nobject; i++)
+ {
+ FcValue v;
+
+ /* XXX this can be optimized by accessing valuelist linked lists
+ * directly and remembering where we were. Most (all) value lists
+ * in normal uses are pretty short though (language tags are
+ * stored as a LangSet, not separate values.). */
+ FcPatternDel (subpat, os->objects[i]);
+ if (FcResultMatch ==
+ FcPatternGet (pat, os->objects[i], idx, &v))
+ {
+ /* XXX binding */
+ FcPatternAdd (subpat, os->objects[i], v, FcFalse);
+ done = FcFalse;
+ }
+ }
+ }
+
+ if (!done)
+ {
+ c->format = format_save;
+ ret = interpret_subexpr (c, subpat, buf);
+ if (!ret)
+ goto bail;
+ }
+
+ idx++;
+ } while (!done);
+
+ if (c->format == format_save)
+ skip_subexpr (c);
+
+bail:
+ FcPatternDestroy (subpat);
+bail0:
+ if (lang_strs)
+ FcStrListDone (lang_strs);
+ FcObjectSetDestroy (os);
+
+ return ret;
+}
+
static FcBool
interpret_simple (FcFormatContext *c,
FcPattern *pat,
FcBool add_colon = FcFalse;
FcBool add_elt_name = FcFalse;
int idx;
+ FcChar8 *else_string;
if (consume_char (c, ':'))
add_colon = FcTrue;
c->format-1 - c->format_orig + 1);
return FcFalse;
}
- expect_char (c, ']');
+ if (!expect_char (c, ']'))
+ return FcFalse;
}
if (consume_char (c, '='))
add_elt_name = FcTrue;
+ /* modifiers */
+ else_string = NULL;
+ if (consume_char (c, ':'))
+ {
+ FcChar8 *orig;
+ /* divert the c->word for now */
+ orig = c->word;
+ c->word = c->word + strlen ((const char *) c->word) + 1;
+ /* for now we just support 'default value' */
+ if (!expect_char (c, '-') ||
+ !read_chars (c, '|'))
+ {
+ c->word = orig;
+ return FcFalse;
+ }
+ else_string = c->word;
+ c->word = orig;
+ }
+
e = FcPatternObjectFindElt (pat,
FcObjectFromName ((const char *) c->word));
- if (e)
+ if (e || else_string)
{
- FcValueListPtr l;
+ FcValueListPtr l = NULL;
if (add_colon)
FcStrBufChar (buf, ':');
FcStrBufChar (buf, '=');
}
- l = FcPatternEltValues(e);
+ if (e)
+ l = FcPatternEltValues(e);
if (idx != -1)
{
}
else goto notfound;
}
- else
+ else if (l)
{
FcNameUnparseValueList (buf, l, '\0');
}
- }
- else
-notfound:
- {
+ else
+ {
+ notfound:
+ if (else_string)
+ FcStrBufString (buf, else_string);
+ }
}
return FcTrue;
const FcChar8 *str,
FcStrBuf *buf)
{
+ /* XXX escape \n etc? */
+
while(*str)
{
switch (*str)
const FcChar8 *str,
FcStrBuf *buf)
{
+ /* XXX escape \n etc? */
+
while(*str)
{
switch (*str)
from_len = strlen (from);
to = from + from_len + 1;
- /* hack: we temporarily diverge c->word */
+ /* hack: we temporarily divert c->word */
c->word = (FcChar8 *) to;
if (!read_chars (c, ')'))
{
start = buf->len;
switch (*c->format) {
- case '=': ret = interpret_builtin (c, pat, buf); break;
- case '{': ret = interpret_subexpr (c, pat, buf); break;
- case '+': ret = interpret_filter (c, pat, buf); break;
- case '-': ret = interpret_delete (c, pat, buf); break;
- case '?': ret = interpret_cond (c, pat, buf); break;
- case '#': ret = interpret_count (c, pat, buf); break;
- default: ret = interpret_simple (c, pat, buf); break;
+ case '=': ret = interpret_builtin (c, pat, buf); break;
+ case '{': ret = interpret_subexpr (c, pat, buf); break;
+ case '+': ret = interpret_filter_in (c, pat, buf); break;
+ case '-': ret = interpret_filter_out (c, pat, buf); break;
+ case '?': ret = interpret_cond (c, pat, buf); break;
+ case '#': ret = interpret_count (c, pat, buf); break;
+ case '[': ret = interpret_enumerate (c, pat, buf); break;
+ default: ret = interpret_simple (c, pat, buf); break;
}
return ret &&
git.wh0rd.org / fontconfig.git / blobdiff