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+/* $Xorg: bdfutils.c,v 1.5 2001/02/09 02:04:02 xorgcvs Exp $ */
+/************************************************************************
+Copyright 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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.
+
+************************************************************************/
+
+/*
+
+Copyright 1994, 1998 The Open Group
+
+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.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#include <ctype.h>
+
+#include <stdio.h>
+#include "fntfilst.h"
+#include "fontstruct.h"
+/* use bitmap structure */
+#include "bitmap.h"
+#include "bdfint.h"
+#if NeedVarargsPrototypes
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+int bdfFileLineNum;
+
+/***====================================================================***/
+
+/* VARARGS1 */
+void
+#if NeedVarargsPrototypes
+bdfError(char* message, ...)
+#else
+bdfError (message, va_alist)
+ char* message;
+ va_dcl
+#endif
+{
+ va_list args;
+
+#if NeedVarargsPrototypes
+ va_start (args, message);
+#else
+ va_start (args);
+#endif
+
+ fprintf(stderr, "BDF Error on line %d: ", bdfFileLineNum);
+ vfprintf(stderr, message, args);
+ va_end (args);
+}
+
+/***====================================================================***/
+
+/* VARARGS1 */
+void
+bdfWarning(message, a0, a1, a2, a3, a4, a5)
+ char *message;
+ pointer a0,
+ a1,
+ a2,
+ a3,
+ a4,
+ a5;
+{
+ fprintf(stderr, "BDF Warning on line %d: ", bdfFileLineNum);
+ fprintf(stderr, message, a0, a1, a2, a3, a4, a5);
+}
+
+/*
+ * read the next (non-comment) line and keep a count for error messages.
+ * Returns buf, or NULL if EOF.
+ */
+
+unsigned char *
+bdfGetLine(file, buf, len)
+ FontFilePtr file;
+ unsigned char *buf;
+ int len;
+{
+ int c;
+ unsigned char *b;
+
+ for (;;) {
+ b = buf;
+ while ((c = FontFileGetc(file)) != FontFileEOF) {
+ if (c == '\r')
+ continue;
+ if (c == '\n') {
+ bdfFileLineNum++;
+ break;
+ }
+ if (b - buf >= (len - 1))
+ break;
+ *b++ = c;
+ }
+ *b = '\0';
+ if (c == FontFileEOF)
+ return NULL;
+ if (b != buf && !bdfIsPrefix(buf, "COMMENT"))
+ break;
+ }
+ return buf;
+}
+
+/***====================================================================***/
+
+Atom
+bdfForceMakeAtom(str, size)
+ register char *str;
+ register int *size;
+{
+ register int len = strlen(str);
+ extern Atom MakeAtom();
+ Atom the_atom;
+
+ if (size != NULL)
+ *size += len + 1;
+ the_atom = MakeAtom(str, len, TRUE);
+ if (the_atom == None)
+ bdfError("Atom allocation failed\n");
+ return the_atom;
+}
+
+/***====================================================================***/
+
+/*
+ * Handle quoted strings.
+ */
+
+Atom
+bdfGetPropertyValue(s)
+ char *s;
+{
+ register char *p,
+ *pp;
+ char *orig_s = s;
+ Atom atom;
+
+ /* strip leading white space */
+ while (*s && (*s == ' ' || *s == '\t'))
+ s++;
+ if (*s == 0) {
+ return bdfForceMakeAtom(s, NULL);
+ }
+ if (*s != '"') {
+ pp = s;
+ /* no white space in value */
+ for (pp = s; *pp; pp++)
+ if (*pp == ' ' || *pp == '\t' || *pp == '\015' || *pp == '\n') {
+ *pp = 0;
+ break;
+ }
+ return bdfForceMakeAtom(s, NULL);
+ }
+ /* quoted string: strip outer quotes and undouble inner quotes */
+ s++;
+ pp = p = (char *) xalloc((unsigned) strlen(s) + 1);
+ if (pp == NULL) {
+ bdfError("Couldn't allocate property value string (%d)\n", strlen(s) + 1);
+ return None;
+ }
+ while (*s) {
+ if (*s == '"') {
+ if (*(s + 1) != '"') {
+ *p++ = 0;
+ atom = bdfForceMakeAtom(pp, NULL);
+ xfree(pp);
+ return atom;
+ } else {
+ s++;
+ }
+ }
+ *p++ = *s++;
+ }
+ xfree (pp);
+ bdfError("unterminated quoted string property: %s\n", (pointer) orig_s);
+ return None;
+}
+
+/***====================================================================***/
+
+/*
+ * return TRUE if string is a valid integer
+ */
+int
+bdfIsInteger(str)
+ char *str;
+{
+ char c;
+
+ c = *str++;
+ if (!(isdigit(c) || c == '-' || c == '+'))
+ return (FALSE);
+
+ while (c = *str++)
+ if (!isdigit(c))
+ return (FALSE);
+
+ return (TRUE);
+}
+
+/***====================================================================***/
+
+/*
+ * make a byte from the first two hex characters in glyph picture
+ */
+
+unsigned char
+bdfHexByte(s)
+ char *s;
+{
+ unsigned char b = 0;
+ register char c;
+ int i;
+
+ for (i = 2; i; i--) {
+ c = *s++;
+ if ((c >= '0') && (c <= '9'))
+ b = (b << 4) + (c - '0');
+ else if ((c >= 'A') && (c <= 'F'))
+ b = (b << 4) + 10 + (c - 'A');
+ else if ((c >= 'a') && (c <= 'f'))
+ b = (b << 4) + 10 + (c - 'a');
+ else
+ bdfError("bad hex char '%c'", c);
+ }
+ return b;
+}
+
+/***====================================================================***/
+
+/*
+ * check for known special property values
+ */
+
+static char *SpecialAtoms[] = {
+ "FONT_ASCENT",
+#define BDF_FONT_ASCENT 0
+ "FONT_DESCENT",
+#define BDF_FONT_DESCENT 1
+ "DEFAULT_CHAR",
+#define BDF_DEFAULT_CHAR 2
+ "POINT_SIZE",
+#define BDF_POINT_SIZE 3
+ "RESOLUTION",
+#define BDF_RESOLUTION 4
+ "X_HEIGHT",
+#define BDF_X_HEIGHT 5
+ "WEIGHT",
+#define BDF_WEIGHT 6
+ "QUAD_WIDTH",
+#define BDF_QUAD_WIDTH 7
+ "FONT",
+#define BDF_FONT 8
+ "RESOLUTION_X",
+#define BDF_RESOLUTION_X 9
+ "RESOLUTION_Y",
+#define BDF_RESOLUTION_Y 10
+ 0,
+};
+
+Bool
+bdfSpecialProperty(pFont, prop, isString, bdfState)
+ FontPtr pFont;
+ FontPropPtr prop;
+ char isString;
+ bdfFileState *bdfState;
+{
+ char **special;
+ char *name;
+
+ name = NameForAtom(prop->name);
+ for (special = SpecialAtoms; *special; special++)
+ if (!strcmp(name, *special))
+ break;
+
+ switch (special - SpecialAtoms) {
+ case BDF_FONT_ASCENT:
+ if (!isString) {
+ pFont->info.fontAscent = prop->value;
+ bdfState->haveFontAscent = TRUE;
+ }
+ return TRUE;
+ case BDF_FONT_DESCENT:
+ if (!isString) {
+ pFont->info.fontDescent = prop->value;
+ bdfState->haveFontDescent = TRUE;
+ }
+ return TRUE;
+ case BDF_DEFAULT_CHAR:
+ if (!isString) {
+ pFont->info.defaultCh = prop->value;
+ bdfState->haveDefaultCh = TRUE;
+ }
+ return TRUE;
+ case BDF_POINT_SIZE:
+ bdfState->pointSizeProp = prop;
+ return FALSE;
+ case BDF_RESOLUTION:
+ bdfState->resolutionProp = prop;
+ return FALSE;
+ case BDF_X_HEIGHT:
+ bdfState->xHeightProp = prop;
+ return FALSE;
+ case BDF_WEIGHT:
+ bdfState->weightProp = prop;
+ return FALSE;
+ case BDF_QUAD_WIDTH:
+ bdfState->quadWidthProp = prop;
+ return FALSE;
+ case BDF_FONT:
+ bdfState->fontProp = prop;
+ return FALSE;
+ case BDF_RESOLUTION_X:
+ bdfState->resolutionXProp = prop;
+ return FALSE;
+ case BDF_RESOLUTION_Y:
+ bdfState->resolutionYProp = prop;
+ return FALSE;
+ default:
+ return FALSE;
+ }
+}
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