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subs.c
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subs.c
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/*
* Low-level utilities.
*
* This file is part of abcm2ps.
*
* Copyright (C) 1998-2014 Jean-François Moine
* Adapted from abc2ps, Copyright (C) 1996,1997 Michael Methfessel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*/
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <ctype.h>
#ifdef HAVE_PANGO
#include <pango/pangocairo.h>
#include <pango/pangofc-font.h>
#endif
#include "abc2ps.h"
char tex_buf[TEX_BUF_SZ]; /* result of tex_str() */
int outft = -1; /* last font in the output file */
static char *strop; /* current string output operation */
static float strlw; /* line width */
static int curft; /* current (wanted) font */
static int defft; /* default font */
static char strtx; /* PostScript text outputing (bits) */
#define TX_STR 1 /* string started */
#define TX_ARR 2 /* glyph/string array started */
#define TX_EXT 4 /* glyph/string array needed */
/* width of characters according to the encoding */
/* these are the widths for Times-Roman, extracted from the 'a2ps' package */
/*fixme-hack: set 500 to control characters for utf-8*/
static short cw_tb[] = {
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
250,333,408,500,500,833,778,333,
333,333,500,564,250,564,250,278,
500,500,500,500,500,500,500,500,
500,500,278,278,564,564,564,444,
921,722,667,667,722,611,556,722,
722,333,389,722,611,889,722,722,
556,722,667,556,611,722,722,944,
722,722,611,333,278,333,469,500,
333,444,500,444,500,444,333,500,
500,278,278,500,278,778,500,500,
500,500,333,389,278,500,500,722,
500,500,444,480,200,480,541,500,
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
500,500,500,500,500,500,500,500,
250,333,500,500,500,500,200,500,
333,760,276,500,564,333,760,333,
400,564,300,300,333,500,453,350,
333,278,310,500,750,750,750,444,
722,722,722,722,722,722,889,667,
611,611,611,611,333,333,333,333,
722,722,722,722,722,722,722,564,
722,722,722,722,722,722,556,500,
444,444,444,444,444,444,667,444,
444,444,444,444,278,278,278,278,
500,500,500,500,500,500,500,564,
500,500,500,500,500,500,500,500,
};
static struct u_ps {
struct u_ps *next;
char text[2];
} *user_ps;
/* -- print message for internal error and maybe stop -- */
void bug(char *msg, int fatal)
{
error(1, 0, "Internal error: %s.", msg);
if (fatal) {
fprintf(stderr, "Emergency stop.\n\n");
exit(EXIT_FAILURE);
}
fprintf(stderr, "Trying to continue...\n");
}
/* -- print an error message -- */
void error(int sev, /* 0: warning, 1: error */
struct SYMBOL *s,
char *fmt, ...)
{
va_list args;
static struct SYMBOL *t;
if (t != info['T' - 'A']) {
char *p;
t = info['T' - 'A'];
p = &t->as.text[2];
while (isspace((unsigned char) *p))
p++;
fprintf(stderr, " - In tune '%s':\n", p);
}
fprintf(stderr, sev == 0 ? "Warning " : "Error ");
if (s) {
fprintf(stderr, "in line %d.%d",
s->as.linenum, s->as.colnum);
s->as.flags |= ABC_F_ERROR;
}
fprintf(stderr, ": ");
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
fprintf(stderr, "\n");
if (sev > severity)
severity = sev;
}
/* -- read a number with a unit -- */
float scan_u(char *str)
{
float a;
int nch;
if (sscanf(str, "%f%n", &a, &nch) == 1) {
if (str[nch] == '\0' || str[nch] == ' ')
return a PT;
if (!strncasecmp(str + nch, "cm", 2))
return a CM;
if (!strncasecmp(str + nch, "in", 2))
return a IN;
if (!strncasecmp(str + nch, "pt", 2))
return a PT;
}
error(1, 0, "Unknown unit value \"%s\"", str);
return 20 PT;
}
/* -- capitalize a string -- */
static void cap_str(char *p)
{
while (*p != '\0') {
#if 1
/* pb with toupper - works with ASCII and some latin characters only */
unsigned char c;
c = (unsigned char) *p;
if (c >= 'a' && c <= 'z') {
*p = c & ~0x20;
} else if (c == 0xc3) {
p++;
c = *p;
if (c >= 0xa0 && c <= 0xbe && c != 0xb7)
*p = c & ~0x20;
} else if (c == 0xc4) {
p++;
c = *p;
if (c >= 0x81 && c <= 0xb7 && (c & 0x01))
(*p)--;
}
#else
*p = toupper((unsigned char) *p);
#endif
p++;
}
}
/* -- return the character width -- */
float cwid(unsigned short c)
{
if (c > sizeof cw_tb / sizeof cw_tb[0])
c = 'a';
return (float) cw_tb[c] / 1000.;
}
/* -- change string taking care of some tex-style codes -- */
/* Return an estimated width of the string. */
float tex_str(char *s)
{
char *d;
signed char c1;
unsigned maxlen, i;
float w, swfac;
w = 0;
d = tex_buf;
maxlen = sizeof tex_buf - 1; /* have room for EOS */
if ((i = curft) <= 0)
i = defft;
swfac = cfmt.font_tb[i].swfac;
while ((c1 = *s++) != '\0') {
switch (c1) {
case '\\':
c1 = *s++;
if (c1 == '\0') {
*d = '\0';
return w;
}
switch (c1) {
case 'n':
c1 = '\n';
break;
case 't':
c1 = '\t';
break;
}
break;
case '$':
if (isdigit((unsigned char) *s)
&& (unsigned) (*s - '0') < FONT_UMAX) {
i = *s - '0';
if (i == 0)
i = defft;
swfac = cfmt.font_tb[i].swfac;
if (--maxlen <= 0)
break;
*d++ = c1;
c1 = *s++;
goto addchar_nowidth;
}
if (*s == '$') {
if (--maxlen <= 0)
break;
*d++ = c1;
s++;
}
break;
case '&':
if (*s == '#' && !svg && epsf != 2) { /* XML char ref */
int j;
long v;
if (s[1] == 'x')
i = sscanf(s, "#x%lx;%n", &v, &j);
else
i = sscanf(s, "#%ld;%n", &v, &j);
if (i != 1) {
error(0, 0, "Bad XML char reference");
break;
}
if (v < 0x80) { /* convert to UTF-8 */
*d++ = v;
} else if (v < 0x800) {
*d++ = 0xc0 | (v >> 6);
*d++ = 0x80 | (v & 0x3f);
} else if (v < 0x10000) {
*d++ = 0xe0 | (v >> 12);
*d++ = 0x80 | ((v >> 6) & 0x3f);
*d++ = 0x80 | (v & 0x3f);
} else {
*d++ = 0xf0 | (v >> 18);
*d++ = 0x80 | ((v >> 12) & 0x3f);
*d++ = 0x80 | ((v >> 6) & 0x3f);
*d++ = 0x80 | (v & 0x3f);
}
s += j;
continue;
}
break;
}
if (c1 < 0) {
if ((c1 & 0xc0) == 0x80) {
unsigned short unicode;
/*fixme: does not work with utf-8 on 3 characters*/
unicode = ((d[-1] & 0x0f) << 6) | (c1 & 0x3f);
w += cwid(unicode) * swfac;
}
} else if (c1 <= 5) { /* accidentals from gchord */
if (--maxlen < 4)
break;
switch (c1) {
case 1:
*d++ = 0xe2;
*d++ = 0x99;
*d++ = 0xaf;
break;
case 2:
*d++ = 0xe2;
*d++ = 0x99;
*d++ = 0xad;
break;
case 3:
*d++ = 0xe2;
*d++ = 0x99;
*d++ = 0xae;
break;
case 4:
*d++ = 0xf0;
*d++ = 0x9d;
*d++ = 0x84;
*d++ = 0xaa;
break;
case 5:
*d++ = 0xf0;
*d++ = 0x9d;
*d++ = 0x84;
*d++ = 0xab;
break;
}
w += cwid('a') * swfac;
continue;
} else {
w += cwid((unsigned short) c1) * swfac;
}
addchar_nowidth:
if (--maxlen <= 0)
break;
*d++ = c1;
}
*d = '\0';
if (maxlen <= 0)
error(0, 0, "Text too large - ignored part: '%s'", s);
return w;
}
#ifdef HAVE_PANGO
#define PG_SCALE (PANGO_SCALE * 72 / 96) /* 96 DPI */
static PangoFontDescription *desc_tb[MAXFONTS];
static PangoLayout *layout = (PangoLayout *) -1;
static PangoAttrList *attrs;
static int out_pg_ft = -1; /* current pango font */
static GString *pg_str;
/* -- initialize the pango mechanism -- */
void pg_init(void)
{
static PangoContext *context;
/* initialize glib */
g_type_init();
context = pango_font_map_create_context(
pango_cairo_font_map_get_default());
if (context != NULL)
layout = pango_layout_new(context);
if (layout == NULL) {
error(0, 0, "pango disabled\n");
cfmt.pango = 0;
} else {
pango_layout_set_wrap(layout, PANGO_WRAP_WORD);
// pango_layout_set_spacing(layout, 0);
pg_str = g_string_sized_new(256);
}
}
void pg_reset_font(void)
{
out_pg_ft = -1;
}
static void desc_font(int fnum)
{
char font_name[128], *p;
if (desc_tb[fnum] == 0) {
p = font_name;
sprintf(p, "%s 10", fontnames[fnum]);
while (*p != '\0') {
if (*p == '-')
*p = ' ';
p++;
}
desc_tb[fnum] = pango_font_description_from_string(font_name);
}
}
/* output a line */
static void pg_line_output(PangoLayoutLine *line)
{
GSList *runs_list;
PangoGlyphInfo *glyph_info;
char tmp[256];
const char *fontname = NULL;
int ret, glypharray;
outft = -1;
glypharray = 0;
for (runs_list = line->runs; runs_list; runs_list = runs_list->next) {
PangoLayoutRun *run = runs_list->data;
PangoItem *item = run->item;
PangoGlyphString *glyphs = run->glyphs;
PangoAnalysis *analysis = &item->analysis;
PangoFont *font = analysis->font;
PangoFcFont *fc_font = PANGO_FC_FONT(font);
FT_Face face = pango_fc_font_lock_face(fc_font);
PangoFontDescription *ftdesc =
pango_font_describe(font);
int wi = pango_font_description_get_size(ftdesc);
int i, c;
if (pango_font_description_get_size(ftdesc) != wi) {
wi = pango_font_description_get_size(ftdesc);
fontname = NULL;
}
for (i = 0; i < glyphs->num_glyphs; i++) {
glyph_info = &glyphs->glyphs[i];
c = glyph_info->glyph;
if (c == PANGO_GLYPH_EMPTY)
continue;
if (c & PANGO_GLYPH_UNKNOWN_FLAG) {
c &= ~PANGO_GLYPH_UNKNOWN_FLAG;
error(0, 0, "char %04x not treated\n", c);
continue;
}
ret = FT_Load_Glyph(face,
c, // PangoGlyph = index
FT_LOAD_NO_SCALE);
if (ret != 0) {
error(0, 0, "freetype error %d\n", ret);
} else if (FT_HAS_GLYPH_NAMES(face)) {
if (FT_Get_Postscript_Name(face) != fontname) {
fontname = FT_Get_Postscript_Name(face);
if (glypharray)
a2b("]glypharray");
a2b("\n");
a2b("/%s %.1f selectfont[",
fontname,
(float) wi / PG_SCALE);
glypharray = 1;
}
FT_Get_Glyph_Name((FT_FaceRec *) face, c,
tmp, sizeof tmp);
a2b("/%s", tmp);
} else {
a2b("%% glyph: %s %d\n",
FT_Get_Postscript_Name(face), c);
}
}
pango_fc_font_unlock_face(fc_font);
}
if (glypharray)
a2b("]glypharray");
}
static void str_font_change(int start,
int end)
{
struct FONTSPEC *f;
int fnum;
PangoAttribute *attr1, *attr2;;
f = &cfmt.font_tb[curft];
fnum = f->fnum;
if (f->size == 0) {
error(0, 0, "Font \"%s\" with a null size - set to 8",
fontnames[fnum]);
f->size = 8;
}
desc_font(fnum);
attr1 = pango_attr_font_desc_new(desc_tb[fnum]);
attr1->start_index = start;
attr1->end_index = end;
pango_attr_list_insert(attrs, attr1);
attr2 = pango_attr_size_new((int) (f->size * PG_SCALE));
attr2->start_index = start;
attr2->end_index = end;
pango_attr_list_insert(attrs, attr2);
}
static void str_set_font(char *p)
{
GString *str;
char *q;
int start;
str = pg_str;
start = str->len;
q = p;
while (*p != '\0') {
switch (*p) {
case '$':
if (isdigit((unsigned char) p[1])
&& (unsigned) (p[1] - '0') < FONT_UMAX) {
if (p > q)
str = g_string_append_len(str, q, p - q);
if (curft != p[1] - '0') {
str_font_change(start, str->len);
start = str->len;
curft = p[1] - '0';
if (curft == 0)
curft = defft;
}
p += 2;
q = p;
continue;
}
if (p[1] == '$') {
str = g_string_append_len(str, q, p - q);
q = ++p;
}
break;
}
p++;
}
if (p > q) {
str = g_string_append_len(str, q, p - q);
str_font_change(start, str->len);
}
pg_str = str;
}
/* -- output a string using the pango and freetype libraries -- */
static void str_pg_out(char *p, int action)
{
PangoLayoutLine *line;
int wi;
float w;
//fixme: test
//a2b("\n%% t: '%s'\n", p);
if (out_pg_ft != curft)
out_pg_ft = -1;
/* guitar chord with TABs */
if (action == A_GCHEXP) {
char *q;
/* get the inter TAB width (see draw_gchord) */
q = mbf - 1;
while (q[-1] != ' ')
q--;
mbf = q;
w = atof(q);
for (;;) {
q = strchr(p, '\t');
if (!q)
break;
*q = '\0';
str_pg_out(p, A_LEFT);
a2b(" %.1f 0 RM ", w);
p = q + 1;
}
}
attrs = pango_attr_list_new();
str_set_font(p);
pango_layout_set_text(layout, pg_str->str, pg_str->len);
pango_layout_set_attributes(layout, attrs);
/* only one line */
line = pango_layout_get_line_readonly(layout, 0);
switch (action) {
case A_CENTER:
case A_RIGHT:
pango_layout_get_size(layout, &wi, NULL);
if (action == A_CENTER)
wi /= 2;
// w = (float) wi / PG_SCALE;
w = (float) wi / PANGO_SCALE;
a2b("-%.1f 0 RM ", w);
break;
}
pg_line_output(line);
pango_layout_set_attributes(layout, NULL);
pg_str = g_string_truncate(pg_str, 0);
pango_attr_list_unref(attrs);
}
/* output a justified or filled paragraph */
static void pg_para_output(int job)
{
GSList *lines, *runs_list;
PangoLayoutLine *line;
PangoGlyphInfo *glyph_info;
char tmp[256];
const char *fontname = NULL;
int ret, glypharray;
int wi;
float y;
pango_layout_set_text(layout, pg_str->str,
pg_str->len - 1); /* remove the last space */
pango_layout_set_attributes(layout, attrs);
outft = -1;
glypharray = 0;
wi = 0;
y = 0;
lines = pango_layout_get_lines_readonly(layout);
for (; lines; lines = lines->next) {
PangoRectangle pos;
line = lines->data;
pango_layout_line_get_extents(line, NULL, &pos);
y += (float) pos.height
* .87 /* magic! */
/ PANGO_SCALE;
for (runs_list = line->runs; runs_list; runs_list = runs_list->next) {
PangoLayoutRun *run = runs_list->data;
PangoItem *item = run->item;
PangoGlyphString *glyphs = run->glyphs;
PangoAnalysis *analysis = &item->analysis;
PangoFont *font = analysis->font;
PangoFcFont *fc_font = PANGO_FC_FONT(font);
FT_Face face = pango_fc_font_lock_face(fc_font);
PangoFontDescription *ftdesc =
pango_font_describe(font);
int i, g, set_move, x;
if (pango_font_description_get_size(ftdesc) != wi) {
wi = pango_font_description_get_size(ftdesc);
fontname = NULL;
}
//printf("font size: %.2f\n", (float) wi / PG_SCALE);
pango_layout_index_to_pos(layout, item->offset, &pos);
x = pos.x;
set_move = 1;
for (i = 0; i < glyphs->num_glyphs; i++) {
glyph_info = &glyphs->glyphs[i];
g = glyph_info->glyph;
if (g == PANGO_GLYPH_EMPTY)
continue;
if (set_move) {
set_move = 0;
if (glypharray) {
a2b("]glypharray");
glypharray = 0;
}
a2b("\n");
a2b("%.2f %.2f M ",
(float) x / PANGO_SCALE, -y);
}
x += glyph_info->geometry.width;
if (g & PANGO_GLYPH_UNKNOWN_FLAG) {
g &= ~PANGO_GLYPH_UNKNOWN_FLAG;
error(0, 0, "char %04x not treated\n", g);
continue;
}
ret = FT_Load_Glyph(face,
g, // PangoGlyph = index
FT_LOAD_NO_SCALE);
if (ret != 0) {
fprintf(stdout, "%%%% freetype error %d\n", ret);
} else if (FT_HAS_GLYPH_NAMES(face)) {
if (FT_Get_Postscript_Name(face) != fontname) {
fontname = FT_Get_Postscript_Name(face);
if (glypharray)
a2b("]glypharray");
a2b("\n/%s %.1f selectfont[",
fontname,
(float) wi / PG_SCALE);
glypharray = 1;
}
FT_Get_Glyph_Name((FT_FaceRec *) face, g,
tmp, sizeof tmp);
if (job == T_JUSTIFY
&& strcmp(tmp, "space") == 0) {
set_move = 1;
continue;
}
if (!glypharray) {
a2b("[");
glypharray = 1;
}
a2b("/%s", tmp);
} else {
a2b("%% glyph: %s %d\n",
FT_Get_Postscript_Name(face), g);
}
}
pango_fc_font_unlock_face(fc_font);
if (glypharray) {
a2b("]glypharray\n");
glypharray = 0;
}
}
if (glypharray) {
a2b("]glypharray\n");
glypharray = 0;
}
}
bskip(y);
pango_layout_set_attributes(layout, NULL);
pg_str = g_string_truncate(pg_str, 0);
}
/* output of filled / justified text */
static void pg_write_text(char *s, int job, float parskip)
{
char *p;
curft = defft;
pango_layout_set_width(layout, strlw * PANGO_SCALE);
pango_layout_set_justify(layout, job == T_JUSTIFY);
attrs = pango_attr_list_new();
p = s;
while (*p != '\0') {
if (*p++ != '\n')
continue;
if (*p == '\n') { /* if empty line */
p[-1] = '\0';
tex_str(s);
str_set_font(tex_buf);
if (pg_str->len > 0)
pg_para_output(job);
bskip(parskip);
buffer_eob();
s = ++p;
continue;
}
//fixme: maybe not useful
p [-1] = ' ';
}
tex_str(s);
str_set_font(tex_buf);
if (pg_str->len)
pg_para_output(job);
pango_attr_list_unref(attrs);
}
/* check if pango is needed */
static int is_latin(unsigned char *p)
{
while (*p != '\0') {
if (*p >= 0xc6) {
if (*p == 0xe2) {
if (p[1] != 0x99
|| p[2] < 0xad || p[2] > 0xaf)
return 0;
p += 2;
} else if (*p == 0xf0) {
if (p[1] != 0x9d
|| p[2] != 0x84
|| p[3] < 0xaa || p[3] > 0xab)
return 0;
} else {
return 0;
}
}
p++;
}
return 1;
}
#endif /* HAVE_PANGO */
/* -- set the default font of a string -- */
void str_font(int ft)
{
curft = defft = ft;
}
/* -- get the current and default fonts -- */
void get_str_font(int *cft, int *dft)
{
*cft = curft;
*dft = defft;
}
/* -- set the current and default fonts -- */
void set_str_font(int cft, int dft)
{
curft = cft;
defft = dft;
}
/* close a string */
static void str_end(int end)
{
if (strtx & TX_STR) {
a2b(")");
strtx &= ~TX_STR;
if (!(strtx & TX_ARR))
a2b("%s", strop);
}
if (!end || !(strtx & TX_ARR))
return;
strtx &= ~TX_ARR;
a2b("]arrayshow");
}
/* -- output one string -- */
static void str_ft_out1(char *p, int l)
{
if (curft != outft) {
str_end(1);
a2b(" ");
set_font(curft);
}
if (!(strtx & TX_STR)) {
a2b("(");
strtx |= TX_STR;
}
a2b("%.*s", l, p);
}
static char *strop_tb[] = { /* index = action (A_xxxx) */
"show",
"showc",
"showr",
"lyshow",
"gcshow",
"anshow",
"gxshow",
};
/* -- output a string and the font changes -- */
static void str_ft_out(char *p, int end)
{
int use_glyph;
char *q;
use_glyph = !svg && epsf != 2 && /* not SVG */
get_font_encoding(curft) == 0; /* utf-8 */
q = p;
while (*p != '\0') {
if ((unsigned char) *p >= 0x80
&& use_glyph) {
if (p > q) {
str_ft_out1(q, p - q);
} else if (curft != outft) {
str_end(1);
a2b(" ");
set_font(curft);
}
str_end(0);
if (!(strtx & TX_ARR)) {
a2b("[");
strtx |= TX_ARR;
}
q = p = glyph_out(p);
continue;
}
switch ((unsigned char) *p) {
case '$':
if (isdigit((unsigned char) p[1])
&& (unsigned) (p[1] - '0') < FONT_UMAX) {
if (p > q)
str_ft_out1(q, p - q);
if (curft != p[1] - '0') {
curft = p[1] - '0';
if (curft == 0)
curft = defft;
use_glyph = !svg && epsf != 2 &&
get_font_encoding(curft) == 0;
}
p += 2;
q = p;
continue;
}
if (p[1] == '$') {
str_ft_out1(q, p - q);
q = ++p;
}
break;
case '(':
case ')':
case '\\':
if (p > q)
str_ft_out1(q, p - q);
str_ft_out1("\\", 1);
q = p;
break;
}
p++;
}
if (p > q)
str_ft_out1(q, p - q);
if (end && strtx)
str_end(1);
}
/* check if some non ASCII characters */
static int non_ascii_p(char *p)
{
while (*p != '\0') {
if ((signed char) *p++ < 0)
return 1;
}
return 0;
}
/* -- output a string, handling the font changes -- */
void str_out(char *p, int action)
{
if (curft <= 0) /* first call */
curft = defft;
/* special case when font change at start of text */
if (*p == '$' && isdigit((unsigned char) p[1])
&& (unsigned) (p[1] - '0') < FONT_UMAX) {
if (curft != p[1] - '0') {
curft = p[1] - '0';
if (curft == 0)
curft = defft;
}
p += 2;
}
#ifdef HAVE_PANGO
//fixme: pango KO if user modification of ly/gc/an/gxshow
/* use pango if some characters are out of the utf-array (in syms.c) */
if (cfmt.pango) {
if (cfmt.pango == 2 || !is_latin((unsigned char *) p)) {
str_pg_out(p, action); /* output the string */
return;
}
}
#endif
/* direct output if no font change
* nor non ASCII characters */
if (strchr(p, '$') == 0
&& !non_ascii_p(p)) {
strop = strop_tb[action];
str_ft_out(p, 1); /* output the string */
return;
}
/* if not left aligned, build a PS function */
switch (action) {
case A_CENTER:
case A_RIGHT:
if (!svg && epsf != 2) {
a2b("/str{");
outft = -1;
strop = "strop";
break;
}
/* fall thru */
default:
strop = strop_tb[action];
break;
}
str_ft_out(p, 1); /* output the string */
/* if not left aligned, call the PS function */
if (svg || epsf == 2)
return;
if (action == A_CENTER || action == A_RIGHT) {
a2b("}def\n"
"strw w");
if (action == A_CENTER)
a2b(" 0.5 mul");
a2b(" neg 0 RM str");
}
}
/* -- output a string with TeX translation -- */
void put_str(char *str, int action)
{
tex_str(str);
str_out(tex_buf, action);
a2b("\n");
}
/* -- output a header information -- */
static void put_inf(struct SYMBOL *s)
{
char *p;
p = s->as.text;
if (p[1] == ':')
p += 2;
while (isspace((unsigned char) *p))
p++;
put_str(p, A_LEFT);
}
/* -- output a header format '111 (222)' -- */
static void put_inf2r(struct SYMBOL *s1,
struct SYMBOL *s2,
int action)
{
char buf[256], *p, *q;
if (!s1) {
s1 = s2;
s2 = NULL;
}
p = &s1->as.text[2];
if (s1->as.text[0] == 'T')
p = trim_title(p, s1);
if (s2) {
buf[sizeof buf - 1] = '\0';
strncpy(buf, p, sizeof buf - 1);