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bdfpkgf.c
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/*
* Copyright 2008 Department of Mathematical Sciences, New Mexico State University
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* 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
* DEPARTMENT OF MATHEMATICAL SCIENCES OR NEW MEXICO STATE UNIVERSITY 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.
*/
/*
* Routines to import GF and PK format bitmap font files.
*
* GF is the "generic font" file format for bitmap fonts; GF files are
* typically produced by Metafont.
*
* PK is the "packed file" font file format which is the de facto standard
* bitmap font format in the TeX world. It contains most of the information
* that's in a GF file, but much more compactly. PK fonts are typically
* generated from GF fonts by gftopk(1), or by a converter like gsftopk(1).
*
* Documentation for these file formats can be found in the literate programs
* GFtoPK, PKtoGF, GFtoDVI and GFtype which are included in a typical TeX
* distribution's source.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef BDF_NO_X11
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#endif /* !BDF_NO_X11 */
#include "bdfP.h"
#undef MAX
#define MAX(h, i) ((h) > (i) ? (h) : (i))
#undef MIN
#define MIN(l, o) ((l) < (o) ? (l) : (o))
/*
* Symbolic names for the opcode bytes in GF files.
*/
#define GF_paint1 64 /* 0x40 */
#define GF_paint2 65 /* 0x41 */
#define GF_paint3 66 /* 0x42 */
#define GF_boc 67 /* 0x43 */
#define GF_boc1 68 /* 0x44 */
#define GF_eoc 69 /* 0x45 */
#define GF_skip0 70 /* 0x46 */
#define GF_skip1 71 /* 0x47 */
#define GF_skip2 72 /* 0x48 */
#define GF_skip3 73 /* 0x49 */
#define GF_newrow_0 74 /* 0x4A */
#define GF_newrow_164 238 /* 0xEE */
#define GF_xxx1 239 /* 0xEF */
#define GF_xxx2 240 /* 0xF0 */
#define GF_xxx3 241 /* 0xF1 */
#define GF_xxx4 242 /* 0xF2 */
#define GF_yyy 243 /* 0xF3 */
#define GF_no_op 244 /* 0xF4 */
#define GF_char_loc 245 /* 0xF5 */
#define GF_char_loc0 246 /* 0xF6 */
#define GF_pre 247 /* 0xF7 */
#define GF_post 248 /* 0xF8 */
#define GF_post_post 249 /* 0xF9 */
/*
* Symbolic names for the opcode bytes in PK files.
*/
#define PK_id 89 /* 0x59 */
#define PK_xxx1 240 /* 0xF0 */
#define PK_xxx4 243 /* 0xF3 */
#define PK_yyy 244 /* 0xF4 */
#define PK_post 245 /* 0xF5 */
#define PK_reserved1 248 /* 0xF8 */
#define PK_pre 247 /* 0xF7 */
/*
* Structure used to track the state for various things when reading a font.
*/
typedef struct {
int top;
int mask;
int c;
} _bdf_mf_state_t;
/*
* Routine to compare two glyphs by encoding so they can be sorted.
*/
static int
by_encoding(const void *a, const void *b)
{
bdf_glyph_t *c1, *c2;
c1 = (bdf_glyph_t *) a;
c2 = (bdf_glyph_t *) b;
if (c1->encoding < c2->encoding)
return -1;
else if (c1->encoding > c2->encoding)
return 1;
return 0;
}
/*
* Routines for scanning numbers from GF and PK files.
*/
static int
_bdf_mf_get16(FILE *in)
{
return (getc(in) << 8) | (getc(in) & 0xff);
}
static int
_bdf_mf_get32(FILE *in)
{
int hi = _bdf_mf_get16(in);
if (hi > 32767)
hi -= 65536;
return (hi << 16) + _bdf_mf_get16(in);
}
static void
printscaled(int s, unsigned char *buf)
{
int delta;
*buf++ = ' ';
*buf++ = '(';
if (s < 0) {
*buf++ = '-';
s = -s;
}
sprintf((char *) buf, "%d", s >> 16);
buf += strlen((char *) buf);
s = 10 * ( s & 65535 ) + 5;
if (s != 5) {
delta = 10;
*buf++ = '.';
do {
if (delta > 65536)
s = s + 32768 - (delta >> 1);
*buf++ = 0x30 + (s >> 16);
s = 10 * (s & 65535);
delta *= 10;
} while (s > delta);
}
sprintf((char *) buf, " scaled)");
}
/*
* Routine to scan the PK specials and add them as comments if necessary.
*/
static int
_bdf_pk_specials(FILE *in, bdf_font_t *font, bdf_options_t *opts,
unsigned char *glyphname)
{
int c;
int i, n, num;
unsigned int comment_size;
unsigned char *comment, bytes[4];
/*
* Initialize the variable that keeps track of the storage allocated
* for the comments encountered.
*/
comment = 0;
comment_size = 0;
while ((c = getc(in)) >= PK_xxx1 && c != GF_char_loc) {
/*
* Anything between PK_reserved1 and 0xff are bad values. PK_pre is
* the font preamble which is not expected here.
*/
if (c == PK_pre || (c >= PK_post && c <= 0xff))
return -2;
/*
* Anything between PK_xxx1 and PK_xxx4 are string specials which will
* be added with the comments if comments are being kept.
*/
if (c >= PK_xxx1 && c <= PK_xxx4) {
/*
* Determine the number of bytes that need to be read to determine
* the length of the string special.
*/
n = (c - PK_xxx1) + 1;
fread((char *) bytes, n, 1, in);
for (i = 0, num = 0; i < n; i++)
num = (num << 8) | bytes[i];
if (opts->keep_comments) {
/*
* Make sure there is enough space for the string.
*/
if (comment_size < num + 1) {
if (comment_size == 0)
comment = (unsigned char *) malloc(num + 1);
else
comment = (unsigned char *)
realloc((char *) comment, num + 1);
comment_size = num + 1;
}
/*
* Read the comment and add it to the font.
*/
fread((char *) comment, num, 1, in);
comment[num] = 0;
if (!strncmp((char *) comment, "title ", 6))
/*
* The comment is the glyph's name/title; save it so it can
* be associated with the forthcoming glyph, rather than
* with the font as a whole.
*/
strcpy((char *) glyphname, (char *) comment + 6);
else
/*
* A regular comment.
*/
_bdf_add_comment(font, (char *) comment, num);
} else
/*
* Skip the string special.
*/
fseek(in, num, 1L);
}
/*
* PK_yyy is a numeric special. Add the number as a comment if
* specified.
*/
if (c == PK_yyy) {
num = _bdf_mf_get32(in);
if (opts->keep_comments) {
if (comment_size < 64) {
if (comment_size == 0)
comment = (unsigned char *) malloc(64);
else
comment = (unsigned char *)
realloc((char *) comment, 64);
comment_size = 64;
}
sprintf((char *) comment, "%d", num);
printscaled(num, comment + strlen((char *) comment));
_bdf_add_comment(font, (char *) comment,
strlen((char *) comment));
}
}
}
/*
* Free up the comment buffer if it was allocated.
*/
if (comment_size > 0)
free((char *) comment);
/*
* Return the byte that caused the loop to terminate. This will be the
* postamble marker GF_post or the start of the glyphs.
*/
return c;
}
/*
* Awkward little routine to collect packed bits from a PK file.
*/
static int
_bdf_pk_getbit(FILE *in, _bdf_mf_state_t *state)
{
state->mask >>= 1;
if (state->mask == 0) {
state->c = getc(in);
state->mask = 0x80;
}
return (state->c & state->mask);
}
/*
* Another awkward little routine to get 4 bits at a time from a PK file.
*/
static int
_bdf_pk_getnybble(FILE *in, _bdf_mf_state_t *state)
{
int r;
if (state->top == 0) {
state->c = getc(in);
state->top = 2;
}
r = (state->c >> ((state->top - 1) << 2)) & 0x0f;
state->top--;
return r;
}
/*
* Yet another awkward routine to read a packed number and a repeat count from
* a PK file.
*/
static int
_bdf_pk_getpacked(FILE *in, int *rcount, int dyn, _bdf_mf_state_t *state)
{
int i, j;
if ((i = _bdf_pk_getnybble(in, state)) == 0) {
do {
j = _bdf_pk_getnybble(in, state);
i++;
} while (!j);
for (;i > 0; i--)
j = (j << 4) + _bdf_pk_getnybble(in, state);
return j - 15 + ((13 - dyn) << 4) + dyn;
}
if (i <= dyn)
return i;
if (i < 14)
return ((i - dyn - 1) << 4) + dyn + 1 + _bdf_pk_getnybble(in, state);
*rcount = (i == 14) ? _bdf_pk_getpacked(in, rcount, dyn, state) : 1;
return _bdf_pk_getpacked(in, rcount, dyn, state);
}
static int
_bdf_load_pk_font(FILE *in, bdf_options_t *opts, bdf_callback_t callback,
void *data, bdf_font_t **font)
{
int n, res, set, x, y, bpr, rcnt, ismono;
int num, plen, pend, row_size, awidth;
short rb, maxrb, minlb, maxlb;
double denom, dw;
bdf_font_t *f;
bdf_glyph_t *gp, g;
bdf_property_t prop;
bdf_callback_struct_t cb;
_bdf_mf_state_t state;
struct stat st;
unsigned char *row, bytes[256], glyphname[256];
row = 0;
glyphname[0] = 0;
/*
* Create a font to work with.
*/
*font = f = (bdf_font_t *) malloc(sizeof(bdf_font_t));
(void) memset((char *) f, 0, sizeof(bdf_font_t));
/*
* Set some defaults and allocate an initial amount of space. Make the
* initial assumption that the font is monowidth but determine if it
* should be proportional when the glyphs are loaded. Allocate space for
* at least 128 glyphs before loading the font.
*/
f->bpp = 1;
f->spacing = BDF_MONOWIDTH;
f->glyphs_size = 128;
f->glyphs = (bdf_glyph_t *) malloc(sizeof(bdf_glyph_t) << 7);
(void) memset((char *) f->glyphs, 0, sizeof(bdf_glyph_t) << 7);
/*
* Initialize the horizontal and vertical offsets of the font to some
* large number.
*/
f->bbx.x_offset = f->bbx.y_offset = 32767;
/*
* Initialize things.
*/
ismono = 1;
row_size = 0;
awidth = 0;
rb = maxrb = maxlb = 0;
minlb = 32767;
(void) memset((char *) &g, 0, sizeof(bdf_glyph_t));
/*
* Load the initial comment.
*/
fread((char *) bytes, 1, 1, in);
n = bytes[0];
fread(bytes, n, 1, in);
bytes[n] = 0;
/*
* Add the comment to the font if indicated.
*/
if (opts->keep_comments)
_bdf_add_comment(f, (char *) bytes, (unsigned int) n);
/*
* Get the point size and scale it down
*/
f->point_size = (int) (((float) _bdf_mf_get32(in)) /
((float) (1 << 20)));
/*
* Skip the checksum.
*/
fread(bytes, 4, 1, in);
/*
* Get the horizontal resolution.
*/
f->resolution_x = (int)
(((((float) _bdf_mf_get32(in)) * 72.27) / ((float) (1 << 16))) + 0.5);
/*
* Get the vertical resolution.
*/
f->resolution_y = (int)
(((((float) _bdf_mf_get32(in)) * 72.27) / ((float) (1 << 16))) + 0.5);
/*
* Determine the denominator used for scalable width calculations.
*/
denom = ((double) f->point_size) * ((double) f->resolution_x);
/*
* Get the font info so we can set up the callback. The callback will
* update after every glyph is loaded and is based on file size instead of
* number of glyphs. This allows the font to be read all at once instead
* of twice.
*/
(void) fstat(fileno(in), &st);
/*
* Set the callback up.
*/
if (callback != 0) {
cb.reason = BDF_LOAD_START;
cb.current = 0;
cb.total = st.st_size;
(*callback)(&cb, data);
}
/*
* Load the glyphs.
*/
gp = f->glyphs;
while ((res = _bdf_pk_specials(in, f, opts, glyphname)) != PK_post &&
res > 0) {
/* Set the glyph's name, if we've seen it */
if (strlen((char *) glyphname)) {
g.name = malloc(strlen((char *) glyphname)+1);
strcpy((char *) g.name, (char *) glyphname);
}
if ((res & 7) == 7) {
/*
* Long glyph info.
*/
/*
* Get the packet length and glyph encoding.
*/
plen = _bdf_mf_get32(in);
g.encoding = _bdf_mf_get32(in);
pend = plen + ftell(in);
/*
* Get the glyph metrics.
*/
/*
* Ignore the TFM width.
*/
(void) _bdf_mf_get32(in);
/*
* Get the device width (DWIDTH) from the horizontal escapement of
* the glyph and calculate the scalable width (SWIDTH) from it.
*/
num = _bdf_mf_get32(in);
g.dwidth = num >> 16;
dw = (double) g.dwidth;
g.swidth = (unsigned short) ((dw * 72000.0) / denom);
/*
* Ignore the vertical escapement.
*/
(void) _bdf_mf_get32(in);
/*
* Collect the remaining glyph metrics info and calculate the
* glyph ascent and descent from the height and vertical offset.
*/
g.bbx.width = (unsigned short) _bdf_mf_get32(in);
g.bbx.height = (unsigned short) _bdf_mf_get32(in);
g.bbx.x_offset = (short) _bdf_mf_get32(in);
g.bbx.y_offset = (short) _bdf_mf_get32(in);
} else if (res & 0x04) {
/*
* Extended glyph info.
*/
if (res & 0x08)
plen = (((res & 0x07) - 4) << 16) + _bdf_mf_get16(in);
else
plen = (((res & 0x0f) - 4) << 16) + _bdf_mf_get16(in);
/*
* Load the encoding byte and the first byte of the TFM width.
*/
fread(bytes, 2, 1, in);
g.encoding = (int) bytes[0];
pend = plen + ftell(in) - 1;
/*
* Get the glyph metrics.
*/
/*
* Ignore the last two bytes of the TFM width.
*/
(void) _bdf_mf_get16(in);
/*
* Get the device width (DWIDTH) from the horizontal escapement of
* the glyph and calculate the scalable width (SWIDTH) from it.
*/
g.dwidth = (unsigned short) _bdf_mf_get16(in);
dw = (double) g.dwidth;
g.swidth = (unsigned short) ((dw * 72000.0) / denom);
/*
* Collect the remaining glyph metrics info and calculate the
* glyph ascent and descent from the height and vertical offset.
*/
g.bbx.width = (unsigned short) _bdf_mf_get16(in);
g.bbx.height = (unsigned short) _bdf_mf_get16(in);
if ((num = _bdf_mf_get16(in)) > 32767)
g.bbx.x_offset = num - 65536;
else
g.bbx.x_offset = (short) num;
if ((num = _bdf_mf_get16(in)) > 32767)
g.bbx.y_offset = num - 65536;
else
g.bbx.y_offset = (short) num;
} else {
/*
* Short glyph info. Read the next 10 bytes so they can be used
* as part of the glyph info calculations.
*/
fread(bytes, 10, 1, in);
num = 0;
if (res & 0x08)
plen = ((res & 0x07) << 8) + bytes[num++];
else
plen = ((res & 0x0f) << 8) + bytes[num++];
g.encoding = (int) bytes[num++];
pend = plen + ftell(in) - 8;
/*
* Skip the TFM width.
*/
num += 3;
/*
* Get the device width (DWIDTH) from the horizontal escapement of
* the glyph and calculate the scalable width (SWIDTH) from it.
*/
g.dwidth = (unsigned short) bytes[num++];
dw = (double) g.dwidth;
g.swidth = (unsigned short) ((dw * 72000.0) / denom);
/*
* Collect the remaining glyph metrics info and calculate the
* glyph ascent and descent from the height and vertical offset.
*/
g.bbx.width = (unsigned short) bytes[num++];
g.bbx.height = (unsigned short) bytes[num++];
/*
* The hoff value we're now to interpret gives the horizontal
* offset of the reference point compared to the character's
* pixels. i.e. a value of -2 means the pixels start at +2; see
* the discussion of the example character raster in the pktogf
* web.
*/
g.bbx.x_offset = (short) ((bytes[num] & 0x80) ?
256 - bytes[num] : bytes[num]);
num++;
g.bbx.y_offset = (short) ((bytes[num] & 0x80) ?
bytes[num] - 256 : bytes[num]);
num++;
}
/*
* Adjust the vertical metrics of the glyph.
*/
g.bbx.y_offset = (g.bbx.y_offset + 1) - g.bbx.height;
g.bbx.ascent = g.bbx.height + g.bbx.y_offset;
g.bbx.descent = -g.bbx.y_offset;
/*
* Check to see if the font needs to be marked as proportional.
*/
if (f->glyphs_used > 0 && ismono &&
(f->glyphs[0].bbx.width != g.bbx.width ||
f->glyphs[0].bbx.height != g.bbx.height ||
f->glyphs[0].bbx.x_offset != g.bbx.x_offset ||
f->glyphs[0].bbx.y_offset != g.bbx.y_offset ||
f->glyphs[0].bbx.ascent != g.bbx.ascent ||
f->glyphs[0].bbx.descent != g.bbx.descent)) {
ismono = 0;
f->spacing = BDF_PROPORTIONAL;
}
/*
* Now load the packed bits or the run length encoded image.
*/
bpr = (g.bbx.width + 7) >> 3;
g.bytes = bpr * g.bbx.height;
g.bitmap = (unsigned char *) malloc(g.bytes);
(void) memset((char *) g.bitmap, 0, g.bytes);
/*
* Reset the state values.
*/
state.top = state.mask = state.c = 0;
if ((res & 0xf0) == 0xe0) {
/*
* Packed bit format.
*/
if ((g.bbx.width & 7) == 0)
/*
* The bits are on a boundary that is a multiple of 8, so the
* bitmap can be read all at once.
*/
fread(g.bitmap, g.bbx.height * bpr, 1, in);
else {
/*
* The width is not a multiple of 8, so the bitmap should be
* read one bit at a time.
*/
for (y = 0; y < g.bbx.height; y++) {
for (x = 0; x < g.bbx.width; x++) {
if (_bdf_pk_getbit(in, &state))
g.bitmap[(y * bpr) + (x >> 3)] |= (0x80 >> (x & 7));
}
}
}
} else {
/*
* Get the run length encoded image.
*/
/*
* The glyph image is going to be run length encoded, so allocate
* a row to collect bits into.
*/
if (row_size < bpr) {
if (row_size == 0)
row = (unsigned char *) malloc(bpr);
else
row = (unsigned char *) realloc((char *) row, bpr);
row_size = bpr;
}
/*
* Initialize the row buffer so we don't get any extra bits in the
* image by accident.
*/
(void) memset((char *) row, 0, row_size);
/*
* Determine if the run length encoding starts with bits that are
* to be set or cleared.
*/
set = res & 0x08;
for (rcnt = x = y = 0; y < g.bbx.height;) {
/*
* Get the next number and a repeat count.
*/
n = _bdf_pk_getpacked(in, &rcnt, (res >> 4) & 0x0f, &state);
while (n > 0) {
for (; n > 0 && x < g.bbx.width; x++, n--) {
if (set)
row[x >> 3] |= (0x80 >> (x & 7));
}
if (x == g.bbx.width) {
/*
* Copy the row into the actual glyph bitmap as many
* times as called for by the repeat count, reset x to
* 0 so a new row can be started, and initialize the
* row buffer again.
*/
for (x = 0; rcnt >= 0; rcnt--, y++)
(void) memcpy((char *) (g.bitmap + (y * bpr)),
(char *) row, bpr);
(void) memset((char *) row, 0, bpr);
rcnt = 0;
}
}
/*
* Invert the flag that indicates whether bits need
* to be set or not.
*/
set = !set;
}
}
/*
* Adjust the font bounding box.
*/
f->bbx.ascent = MAX(g.bbx.ascent, f->bbx.ascent);
f->bbx.descent = MAX(g.bbx.descent, f->bbx.descent);
rb = g.bbx.width + g.bbx.x_offset;
maxrb = MAX(rb, maxrb);
minlb = MIN(g.bbx.x_offset, minlb);
maxlb = MAX(g.bbx.x_offset, maxlb);
/*
* Increase the average width count to be used later.
*/
awidth += g.bbx.width;
if ((g.encoding < 0 || g.encoding > 65535) && opts->keep_unencoded) {
/*
* If the glyph is unencoded (encoding field < 0 or > 65535) and
* the unencoded glyphs should be kept, then add the glyph to the
* unencoded list of the font.
*/
if (f->unencoded_used == f->unencoded_size) {
if (f->unencoded_size == 0)
f->unencoded = (bdf_glyph_t *) malloc(sizeof(bdf_glyph_t));
else
f->unencoded = (bdf_glyph_t *)
realloc((char *) f->unencoded,
sizeof(bdf_glyph_t) * (f->unencoded_size + 1));
f->unencoded_size++;
}
(void) memcpy((char *) (f->unencoded + f->unencoded_used),
(char *) &g, sizeof(bdf_glyph_t));
f->unencoded_used++;
} else if (g.encoding >= 0 && g.encoding <= 65535) {
/*
* Add the glyph to the encoded list.
*/
if (f->glyphs_used == f->glyphs_size) {
/*
* Expand by 128 glyphs at a time.
*/
if (f->glyphs_used == 0)
f->glyphs = (bdf_glyph_t *)
malloc(sizeof(bdf_glyph_t) << 7);
else
f->glyphs = (bdf_glyph_t *)
realloc((char *) f->glyphs,
sizeof(bdf_glyph_t) * (f->glyphs_used + 128));
gp = f->glyphs + f->glyphs_used;
(void) memset((char *) gp, 0, sizeof(bdf_glyph_t) << 7);
f->glyphs_size += 128;
}
gp = f->glyphs + f->glyphs_used++;
(void) memcpy((char *) gp, (char *) &g, sizeof(bdf_glyph_t));;
} else {
/*
* Free up the memory allocated for the temporary glyph so it
* doesn't leak.
*/
if (g.bytes > 0)
free((char *) g.bitmap);
}
/*
* Make sure the temporary glyph is reinitialized.
*/
(void) memset((char *) &g, 0, sizeof(bdf_glyph_t));
/*
* Call the callback if indicated.
*/
if (callback != 0) {
cb.reason = BDF_LOADING;
cb.total = st.st_size;
cb.current = ftell(in);
(*callback)(&cb, data);
}
}
/*
* Sort all the glyphs by encoding.
*/
qsort((char *) f->glyphs, f->glyphs_used, sizeof(bdf_glyph_t),
by_encoding);
/*
* Adjust the font bounding box from the values collected.
*/
f->bbx.width = maxrb - minlb;
f->bbx.height = f->bbx.ascent + f->bbx.descent;
f->bbx.x_offset = minlb;
f->bbx.y_offset = -f->bbx.descent;
/*
* Set the default character as being undefined.
*/
f->default_glyph = -1;
/*
* Set the font ascent and descent.
*/
f->font_ascent = f->bbx.ascent;
f->font_descent = f->bbx.descent;
/*
* Now add the properties to the font.
*/
prop.name = "POINT_SIZE";
prop.format = BDF_INTEGER;
prop.value.int32 = f->point_size * 10;
bdf_add_font_property(f, &prop);
/*
* Calculate and add the pixel size.
*/
denom = (double) f->resolution_y;
dw = (double) (f->point_size * 10);
prop.name = "PIXEL_SIZE";
prop.format = BDF_INTEGER;
prop.value.int32 = (int) (((denom * dw) / 722.7) + 0.5);
bdf_add_font_property(f, &prop);
prop.name = "RESOLUTION_X";
prop.format = BDF_CARDINAL;
prop.value.card32 = (unsigned int) f->resolution_x;
bdf_add_font_property(f, &prop);
prop.name = "RESOLUTION_Y";
prop.format = BDF_CARDINAL;
prop.value.card32 = (unsigned int) f->resolution_y;
bdf_add_font_property(f, &prop);
prop.name = "FONT_ASCENT";
prop.format = BDF_INTEGER;
prop.value.int32 = f->font_ascent;
bdf_add_font_property(f, &prop);
prop.name = "FONT_DESCENT";
prop.format = BDF_INTEGER;
prop.value.int32 = f->font_descent;
bdf_add_font_property(f, &prop);
prop.name = "AVERAGE_WIDTH";
prop.format = BDF_INTEGER;
prop.value.int32 = (awidth / (f->unencoded_used + f->glyphs_used)) * 10;
bdf_add_font_property(f, &prop);
/*
* Default all PK fonts to proportional spacing.
*/
prop.name = "SPACING";
prop.format = BDF_ATOM;
prop.value.atom = "P";
switch (f->spacing) {
case BDF_PROPORTIONAL: prop.value.atom = "P"; break;
case BDF_MONOWIDTH: prop.value.atom = "M"; break;
case BDF_CHARCELL: prop.value.atom = "C"; break;
}
bdf_add_font_property(f, &prop);
/*
* Free up the row buffer if it was allocated.
*/
if (row_size > 0)
free((char *) row);
/*
* Call the callback one last time if necessary.
*/
if (callback != 0 && cb.current != cb.total) {
cb.reason = BDF_LOADING;
cb.total = cb.current = st.st_size;
(*callback)(&cb, data);
}
/*
* Add a message indicating the font was converted.
*/
_bdf_add_comment(f, "Font converted from PK to BDF.", 30);
_bdf_add_acmsg(f, "Font converted from PK to BDF.", 30);
return BDF_OK;
}
static int
_bdf_gf_specials(FILE *in, bdf_font_t *font, bdf_options_t *opts,
unsigned char glyphname[])
{
int c;
int i, n, num;
unsigned int comment_size;
unsigned char *comment, bytes[4];
/*
* Initialize the variable that keeps track of the storage allocated
* for the comments encountered.
*/
comment = 0;
comment_size = 0;
while ((c = getc(in)) >= GF_xxx1) {
/*
* GF_xxx1 .. GF_xxx4 are string specials which will be added with the
* comments if comments are being kept.
*/
if (c >= GF_xxx1 && c <= GF_xxx4) {
/*
* Determine the number of bytes that need to be read to determine
* the length of the string special.
*/
n = (c - GF_xxx1) + 1;
fread((char *) bytes, n, 1, in);
for (i = 0, num = 0; i < n; i++)
num = (num << 8) | bytes[i];
if (opts->keep_comments) {
/*
* Make sure there is enough space for the string.
*/
if (comment_size < num + 1) {
if (comment_size == 0)
comment = (unsigned char *) malloc(num + 1);
else
comment = (unsigned char *)
realloc((char *) comment, num + 1);
comment_size = num + 1;
}
/*
* Read the comment and add it to the font.
*/
fread((char *) comment, num, 1, in);
comment[num] = 0;
if (!strncmp((char *) comment, "title ", 6))
/*
* The comment is the glyph's name/title; save it so
* it can be associated with the forthcoming glyph,
* rather than with the font as a whole.
*/
strcpy((char *) glyphname, (char *) comment + 6);
else
/*
* A regular comment
*/
_bdf_add_comment(font, (char *) comment, num);
} else
/*
* Skip the string special.
*/
fseek(in, num, 1L);
c = GF_no_op;
}
/*
* GF_yyy is a numeric special. Add the number as a comment if
* specified.
*/
if (c == GF_yyy) {
num = _bdf_mf_get32(in);
if (opts->keep_comments) {
if (comment_size < 64) {
if (comment_size == 0)
comment = (unsigned char *) malloc(64);
else
comment = (unsigned char *)
realloc((char *) comment, 64);
comment_size = 64;
}
sprintf((char *) comment, "%d", num);
printscaled(num, comment + strlen((char *) comment));
_bdf_add_comment(font, (char *) comment,
strlen((char *) comment));
}
c = GF_no_op;