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-rw-r--r--fontconfig/doc/edit-sgml.c546
1 files changed, 546 insertions, 0 deletions
diff --git a/fontconfig/doc/edit-sgml.c b/fontconfig/doc/edit-sgml.c
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+++ b/fontconfig/doc/edit-sgml.c
@@ -0,0 +1,546 @@
+/*
+ * fontconfig/doc/edit-sgml.c
+ *
+ * Copyright © 2003 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * 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
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * 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
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+static void *
+New (int size);
+
+static void *
+Reallocate (void *p, int size);
+
+static void
+Dispose (void *p);
+
+typedef enum { False, True } Bool;
+
+typedef struct {
+ char *buf;
+ int size;
+ int len;
+} String;
+
+static String *
+StringNew (void);
+
+static void
+StringAdd (String *s, char c);
+
+static void
+StringAddString (String *s, char *buf);
+
+static String *
+StringMake (char *buf);
+
+static void
+StringDel (String *s);
+
+static void
+StringPut (FILE *f, String *s);
+
+static void
+StringDispose (String *s);
+
+typedef struct {
+ String *tag;
+ String *text;
+} Replace;
+
+static Replace *
+ReplaceNew (void);
+
+static void
+ReplaceDispose (Replace *r);
+
+static void
+Bail (const char *format, int line, const char *arg);
+
+static Replace *
+ReplaceRead (FILE *f, int *linep);
+
+typedef struct _replaceList {
+ struct _replaceList *next;
+ Replace *r;
+} ReplaceList;
+
+static ReplaceList *
+ReplaceListNew (Replace *r, ReplaceList *next);
+
+static void
+ReplaceListDispose (ReplaceList *l);
+
+typedef struct {
+ ReplaceList *head;
+} ReplaceSet;
+
+static ReplaceSet *
+ReplaceSetNew (void);
+
+static void
+ReplaceSetDispose (ReplaceSet *s);
+
+static void
+ReplaceSetAdd (ReplaceSet *s, Replace *r);
+
+static Replace *
+ReplaceSetFind (ReplaceSet *s, char *tag);
+
+static ReplaceSet *
+ReplaceSetRead (FILE *f, int *linep);
+
+typedef struct _skipStack {
+ struct _skipStack *prev;
+ int skipping;
+} SkipStack;
+
+static SkipStack *
+SkipStackPush (SkipStack *prev, int skipping);
+
+static SkipStack *
+SkipStackPop (SkipStack *prev);
+
+typedef struct _loopStack {
+ struct _loopStack *prev;
+ String *tag;
+ String *extra;
+ long pos;
+} LoopStack;
+
+static LoopStack *
+LoopStackPush (LoopStack *prev, FILE *f, char *tag);
+
+static LoopStack *
+LoopStackLoop (ReplaceSet *rs, LoopStack *ls, FILE *f);
+
+static void
+LineSkip (FILE *f, int *linep);
+
+static void
+DoReplace (FILE *f, int *linep, ReplaceSet *s);
+
+#define STRING_INIT 128
+
+static void *
+New (int size)
+{
+ void *m = malloc (size);
+ if (!m)
+ abort ();
+ return m;
+}
+
+static void *
+Reallocate (void *p, int size)
+{
+ void *r = realloc (p, size);
+
+ if (!r)
+ abort ();
+ return r;
+}
+
+static void
+Dispose (void *p)
+{
+ free (p);
+}
+
+static String *
+StringNew (void)
+{
+ String *s;
+
+ s = New (sizeof (String));
+ s->buf = New (STRING_INIT);
+ s->size = STRING_INIT - 1;
+ s->buf[0] = '\0';
+ s->len = 0;
+ return s;
+}
+
+static void
+StringAdd (String *s, char c)
+{
+ if (s->len == s->size)
+ s->buf = Reallocate (s->buf, (s->size *= 2) + 1);
+ s->buf[s->len++] = c;
+ s->buf[s->len] = '\0';
+}
+
+static void
+StringAddString (String *s, char *buf)
+{
+ while (*buf)
+ StringAdd (s, *buf++);
+}
+
+static String *
+StringMake (char *buf)
+{
+ String *s = StringNew ();
+ StringAddString (s, buf);
+ return s;
+}
+
+static void
+StringDel (String *s)
+{
+ if (s->len)
+ s->buf[--s->len] = '\0';
+}
+
+static void
+StringPut (FILE *f, String *s)
+{
+ char *b = s->buf;
+
+ while (*b)
+ putc (*b++, f);
+}
+
+#define StringLast(s) ((s)->len ? (s)->buf[(s)->len - 1] : '\0')
+
+static void
+StringDispose (String *s)
+{
+ Dispose (s->buf);
+ Dispose (s);
+}
+
+static Replace *
+ReplaceNew (void)
+{
+ Replace *r = New (sizeof (Replace));
+ r->tag = StringNew ();
+ r->text = StringNew ();
+ return r;
+}
+
+static void
+ReplaceDispose (Replace *r)
+{
+ StringDispose (r->tag);
+ StringDispose (r->text);
+ Dispose (r);
+}
+
+static void
+Bail (const char *format, int line, const char *arg)
+{
+ fprintf (stderr, "fatal: ");
+ fprintf (stderr, format, line, arg);
+ fprintf (stderr, "\n");
+ exit (1);
+}
+
+static int
+Getc (FILE *f, int *linep)
+{
+ int c = getc (f);
+ if (c == '\n')
+ ++(*linep);
+ return c;
+}
+
+static void
+Ungetc (int c, FILE *f, int *linep)
+{
+ if (c == '\n')
+ --(*linep);
+ ungetc (c, f);
+}
+
+static Replace *
+ReplaceRead (FILE *f, int *linep)
+{
+ int c;
+ Replace *r;
+
+ while ((c = Getc (f, linep)) != '@')
+ {
+ if (c == EOF)
+ return 0;
+ }
+ r = ReplaceNew();
+ while ((c = Getc (f, linep)) != '@')
+ {
+ if (c == EOF)
+ {
+ ReplaceDispose (r);
+ return 0;
+ }
+ if (isspace (c))
+ Bail ("%d: invalid character after tag %s", *linep, r->tag->buf);
+ StringAdd (r->tag, c);
+ }
+ if (r->tag->buf[0] == '\0')
+ {
+ ReplaceDispose (r);
+ return 0;
+ }
+ while (isspace ((c = Getc (f, linep))))
+ ;
+ Ungetc (c, f, linep);
+ while ((c = Getc (f, linep)) != '@' && c != EOF)
+ StringAdd (r->text, c);
+ if (c == '@')
+ Ungetc (c, f, linep);
+ while (isspace (StringLast (r->text)))
+ StringDel (r->text);
+ if (StringLast(r->text) == '%')
+ {
+ StringDel (r->text);
+ StringAdd (r->text, ' ');
+ }
+ return r;
+}
+
+static ReplaceList *
+ReplaceListNew (Replace *r, ReplaceList *next)
+{
+ ReplaceList *l = New (sizeof (ReplaceList));
+ l->r = r;
+ l->next = next;
+ return l;
+}
+
+static void
+ReplaceListDispose (ReplaceList *l)
+{
+ if (l)
+ {
+ ReplaceListDispose (l->next);
+ ReplaceDispose (l->r);
+ Dispose (l);
+ }
+}
+
+static ReplaceSet *
+ReplaceSetNew (void)
+{
+ ReplaceSet *s = New (sizeof (ReplaceSet));
+ s->head = 0;
+ return s;
+}
+
+static void
+ReplaceSetDispose (ReplaceSet *s)
+{
+ ReplaceListDispose (s->head);
+ Dispose (s);
+}
+
+static void
+ReplaceSetAdd (ReplaceSet *s, Replace *r)
+{
+ s->head = ReplaceListNew (r, s->head);
+}
+
+static Replace *
+ReplaceSetFind (ReplaceSet *s, char *tag)
+{
+ ReplaceList *l;
+
+ for (l = s->head; l; l = l->next)
+ if (!strcmp (tag, l->r->tag->buf))
+ return l->r;
+ return 0;
+}
+
+static ReplaceSet *
+ReplaceSetRead (FILE *f, int *linep)
+{
+ ReplaceSet *s = ReplaceSetNew ();
+ Replace *r;
+
+ while ((r = ReplaceRead (f, linep)))
+ {
+ while (ReplaceSetFind (s, r->tag->buf))
+ StringAdd (r->tag, '+');
+ ReplaceSetAdd (s, r);
+ }
+ if (!s->head)
+ {
+ ReplaceSetDispose (s);
+ s = 0;
+ }
+ return s;
+}
+
+static SkipStack *
+SkipStackPush (SkipStack *prev, int skipping)
+{
+ SkipStack *ss = New (sizeof (SkipStack));
+ ss->prev = prev;
+ ss->skipping = skipping;
+ return ss;
+}
+
+static SkipStack *
+SkipStackPop (SkipStack *prev)
+{
+ SkipStack *ss = prev->prev;
+ Dispose (prev);
+ return ss;
+}
+
+static LoopStack *
+LoopStackPush (LoopStack *prev, FILE *f, char *tag)
+{
+ LoopStack *ls = New (sizeof (LoopStack));
+ ls->prev = prev;
+ ls->tag = StringMake (tag);
+ ls->extra = StringNew ();
+ ls->pos = ftell (f);
+ return ls;
+}
+
+static LoopStack *
+LoopStackLoop (ReplaceSet *rs, LoopStack *ls, FILE *f)
+{
+ String *s = StringMake (ls->tag->buf);
+ LoopStack *ret = ls;
+ Bool loop;
+
+ StringAdd (ls->extra, '+');
+ StringAddString (s, ls->extra->buf);
+ loop = ReplaceSetFind (rs, s->buf) != 0;
+ StringDispose (s);
+ if (loop)
+ fseek (f, ls->pos, SEEK_SET);
+ else
+ {
+ ret = ls->prev;
+ StringDispose (ls->tag);
+ StringDispose (ls->extra);
+ Dispose (ls);
+ }
+ return ret;
+}
+
+static void
+LineSkip (FILE *f, int *linep)
+{
+ int c;
+
+ while ((c = Getc (f, linep)) == '\n')
+ ;
+ Ungetc (c, f, linep);
+}
+
+static void
+DoReplace (FILE *f, int *linep, ReplaceSet *s)
+{
+ int c;
+ String *tag;
+ Replace *r;
+ SkipStack *ss = 0;
+ LoopStack *ls = 0;
+ int skipping = 0;
+
+ while ((c = Getc (f, linep)) != EOF)
+ {
+ if (c == '@')
+ {
+ tag = StringNew ();
+ while ((c = Getc (f, linep)) != '@')
+ {
+ if (c == EOF)
+ abort ();
+ StringAdd (tag, c);
+ }
+ if (ls)
+ StringAddString (tag, ls->extra->buf);
+ switch (tag->buf[0]) {
+ case '?':
+ ss = SkipStackPush (ss, skipping);
+ if (!ReplaceSetFind (s, tag->buf + 1))
+ skipping++;
+ LineSkip (f, linep);
+ break;
+ case ':':
+ if (!ss)
+ abort ();
+ if (ss->skipping == skipping)
+ ++skipping;
+ else
+ --skipping;
+ LineSkip (f, linep);
+ break;
+ case ';':
+ skipping = ss->skipping;
+ ss = SkipStackPop (ss);
+ LineSkip (f, linep);
+ break;
+ case '{':
+ ls = LoopStackPush (ls, f, tag->buf + 1);
+ LineSkip (f, linep);
+ break;
+ case '}':
+ ls = LoopStackLoop (s, ls, f);
+ LineSkip (f, linep);
+ break;
+ default:
+ r = ReplaceSetFind (s, tag->buf);
+ if (r && !skipping)
+ StringPut (stdout, r->text);
+ break;
+ }
+ StringDispose (tag);
+ }
+ else if (!skipping)
+ putchar (c);
+ }
+}
+
+int
+main (int argc, char **argv)
+{
+ FILE *f;
+ ReplaceSet *s;
+ int iline, oline;
+
+ if (!argv[1])
+ Bail ("usage: %*s <template.sgml>", 0, argv[0]);
+ f = fopen (argv[1], "r");
+ if (!f)
+ {
+ Bail ("can't open file %s", 0, argv[1]);
+ exit (1);
+ }
+ iline = 1;
+ while ((s = ReplaceSetRead (stdin, &iline)))
+ {
+ oline = 1;
+ DoReplace (f, &oline, s);
+ ReplaceSetDispose (s);
+ rewind (f);
+ }
+ if (ferror (stdout))
+ Bail ("%s", 0, "error writing output");
+ exit (0);
+}
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