+/* $XConsortium: fontxlfd.c /main/20 1996/09/28 16:49:26 rws $ */
+/* $XFree86: xc/lib/font/util/fontxlfd.c,v 3.5 1996/12/23 06:02:34 dawes Exp $ */
+
+/*
+
+Copyright (c) 1990 X Consortium
+
+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 THE X CONSORTIUM 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 X Consortium 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 X Consortium.
+
+*/
+
+/*
+ * Author: Keith Packard, MIT X Consortium
+ */
+
+#include "fontmisc.h"
+#include "fontstruct.h"
+#include "fontxlfd.h"
+#include <X11/Xos.h>
+#include <math.h>
+#if !defined(X_NOT_STDC_ENV) || defined(SCO)
+#include <stdlib.h>
+#endif
+#if defined(X_NOT_STDC_ENV) || (defined(sony) && !defined(SYSTYPE_SYSV) && !defined(_SYSTYPE_SYSV))
+#define NO_LOCALE
+#endif
+#ifndef NO_LOCALE
+#include <locale.h>
+#endif
+#include <ctype.h>
+#include <stdio.h> /* for sprintf() */
+
+static char *
+GetInt(ptr, val)
+ char *ptr;
+ int *val;
+{
+ if (*ptr == '*') {
+ *val = -1;
+ ptr++;
+ } else
+ for (*val = 0; *ptr >= '0' && *ptr <= '9';)
+ *val = *val * 10 + *ptr++ - '0';
+ if (*ptr == '-')
+ return ptr;
+ return (char *) 0;
+}
+
+#define minchar(p) ((p).min_char_low + ((p).min_char_high << 8))
+#define maxchar(p) ((p).max_char_low + ((p).max_char_high << 8))
+
+
+#ifndef NO_LOCALE
+static struct lconv *locale = 0;
+#endif
+static char *radix = ".", *plus = "+", *minus = "-";
+
+static char *
+readreal(ptr, result)
+char *ptr;
+double *result;
+{
+ char buffer[80], *p1, *p2;
+ int count;
+
+#ifndef NO_LOCALE
+ /* Figure out what symbols apply in this locale */
+
+ if (!locale)
+ {
+ locale = localeconv();
+ if (locale->decimal_point && *locale->decimal_point)
+ radix = locale->decimal_point;
+ if (locale->positive_sign && *locale->positive_sign)
+ plus = locale->positive_sign;
+ if (locale->negative_sign && *locale->negative_sign)
+ minus = locale->negative_sign;
+ }
+#endif
+ /* Copy the first 80 chars of ptr into our local buffer, changing
+ symbols as needed. */
+ for (p1 = ptr, p2 = buffer;
+ *p1 && (p2 - buffer) < sizeof(buffer) - 1;
+ p1++, p2++)
+ {
+ switch(*p1)
+ {
+ case '~': *p2 = *minus; break;
+ case '+': *p2 = *plus; break;
+ case '.': *p2 = *radix; break;
+ default: *p2 = *p1;
+ }
+ }
+ *p2 = 0;
+
+ /* Now we have something that strtod() can interpret... do it. */
+#ifndef X_NOT_STDC_ENV
+ *result = strtod(buffer, &p1);
+ /* Return NULL if failure, pointer past number if success */
+ return (p1 == buffer) ? (char *)0 : (ptr + (p1 - buffer));
+#else
+ for (p1 = buffer; isspace(*p1); p1++)
+ ;
+ if (sscanf(p1, "%lf", result) != 1)
+ return (char *)0;
+ while (!isspace(*p1))
+ p1++;
+ return ptr + (p1 - buffer);
+#endif
+}
+
+static char *
+xlfd_double_to_text(value, buffer, space_required)
+double value;
+char *buffer;
+int space_required;
+{
+ char formatbuf[40];
+ register char *p1;
+ int ndigits, exponent;
+
+#ifndef NO_LOCALE
+ if (!locale)
+ {
+ locale = localeconv();
+ if (locale->decimal_point && *locale->decimal_point)
+ radix = locale->decimal_point;
+ if (locale->positive_sign && *locale->positive_sign)
+ plus = locale->positive_sign;
+ if (locale->negative_sign && *locale->negative_sign)
+ minus = locale->negative_sign;
+ }
+#endif
+ /* Compute a format to use to render the number */
+ sprintf(formatbuf, "%%.%dle", XLFD_NDIGITS);
+
+ if (space_required)
+ *buffer++ = ' ';
+
+ /* Render the number using printf's idea of formatting */
+ sprintf(buffer, formatbuf, value);
+
+ /* Find and read the exponent value */
+ for (p1 = buffer + strlen(buffer);
+ *p1-- != 'e' && p1[1] != 'E';);
+ exponent = atoi(p1 + 2);
+ if (value == 0.0) exponent = 0;
+
+ /* Figure out how many digits are significant */
+ while (p1 >= buffer && (!isdigit(*p1) || *p1 == '0')) p1--;
+ ndigits = 0;
+ while (p1 >= buffer) if (isdigit(*p1--)) ndigits++;
+
+ /* Figure out notation to use */
+ if (exponent >= XLFD_NDIGITS || ndigits - exponent > XLFD_NDIGITS + 1)
+ {
+ /* Scientific */
+ sprintf(formatbuf, "%%.%dle", ndigits - 1);
+ sprintf(buffer, formatbuf, value);
+ }
+ else
+ {
+ /* Fixed */
+ ndigits -= exponent + 1;
+ if (ndigits < 0) ndigits = 0;
+ sprintf(formatbuf, "%%.%dlf", ndigits);
+ sprintf(buffer, formatbuf, value);
+ if (exponent < 0)
+ {
+ p1 = buffer;
+ while (*p1 && *p1 != '0') p1++;
+ while (*p1++) p1[-1] = *p1;
+ }
+ }
+
+ /* Last step, convert the locale-specific sign and radix characters
+ to our own. */
+ for (p1 = buffer; *p1; p1++)
+ {
+ if (*p1 == *minus) *p1 = '~';
+ else if (*p1 == *plus) *p1 = '+';
+ else if (*p1 == *radix) *p1 = '.';
+ }
+
+ return buffer - space_required;
+}
+
+double
+xlfd_round_double(x)
+double x;
+{
+ /* Utility for XLFD users to round numbers to XLFD_NDIGITS
+ significant digits. How do you round to n significant digits on
+ a binary machine? */
+
+#if defined(i386) || defined(__i386__) || defined(__alpha__)
+#if !defined(__EMX__)
+#include <float.h>
+
+/* if we have IEEE 754 fp, we can round to binary digits... */
+
+#if (FLT_RADIX == 2) && (DBL_DIG == 15) && (DBL_MANT_DIG == 53)
+
+#ifndef M_LN2
+#define M_LN2 0.69314718055994530942
+#endif
+#ifndef M_LN10
+#define M_LN10 2.30258509299404568402
+#endif
+
+/* convert # of decimal digits to # of binary digits */
+#define XLFD_NDIGITS_2 ((int)(XLFD_NDIGITS * M_LN10 / M_LN2 + 0.5))
+
+ union conv_d {
+ double d;
+ unsigned char b[8];
+ } d;
+ int i,j,k,d_exp;
+
+ if (x == 0)
+ return x;
+
+ /* do minor sanity check for IEEE 754 fp and correct byte order */
+ d.d = 1.0;
+ if (sizeof(double) == 8 && d.b[7] == 0x3f && d.b[6] == 0xf0) {
+
+ /*
+ * this code will round IEEE 754 double to XLFD_NDIGITS_2 binary digits
+ */
+
+ d.d = x;
+ d_exp = (d.b[7] << 4) | (d.b[6] >> 4);
+
+ i = (DBL_MANT_DIG-XLFD_NDIGITS_2) >> 3;
+ j = 1 << ((DBL_MANT_DIG-XLFD_NDIGITS_2) & 0x07);
+ for (; i<7; i++) {
+ k = d.b[i] + j;
+ d.b[i] = k;
+ if (k & 0x100) j = 1;
+ else break;
+ }
+ if ((i==7) && ((d.b[6] & 0xf0) != ((d_exp<<4) & 0xf0))) {
+ /* mantissa overflow: increment exponent */
+ d_exp = (d_exp & 0x800 ) | ((d_exp & 0x7ff) + 1);
+ d.b[7] = d_exp >> 4;
+ d.b[6] = (d.b[6] & 0x0f) | (d_exp << 4);
+ }
+
+ i = (DBL_MANT_DIG-XLFD_NDIGITS_2) >> 3;
+ j = 1 << ((DBL_MANT_DIG-XLFD_NDIGITS_2) & 0x07);
+ d.b[i] &= ~(j-1);
+ for (;--i>=0;) d.b[i] = 0;
+
+ return d.d;
+ }
+ else
+#endif
+#endif /* !__EMX__ */
+#endif /* i386 || __i386__ */
+ {
+ /*
+ * If not IEEE 754: Let printf() do it for you.
+ */
+
+ char formatbuf[40], buffer[40];
+
+ sprintf(formatbuf, "%%.%dlg", XLFD_NDIGITS);
+ sprintf(buffer, formatbuf, x);
+ return atof(buffer);
+ }
+}
+
+static char *
+GetMatrix(ptr, vals, which)
+char *ptr;
+FontScalablePtr vals;
+int which;
+{
+ double *matrix;
+
+ if (which == PIXELSIZE_MASK)
+ matrix = vals->pixel_matrix;
+ else if (which == POINTSIZE_MASK)
+ matrix = vals->point_matrix;
+ else return (char *)0;
+
+ while (isspace(*ptr)) ptr++;
+ if (*ptr == '[')
+ {
+ /* This is a matrix containing real numbers. It would be nice
+ to use strtod() or sscanf() to read the numbers, but those
+ don't handle '~' for minus and we cannot force them to use a
+ "." for the radix. We'll have to do the hard work ourselves
+ (in readreal()). */
+
+ if ((ptr = readreal(++ptr, matrix + 0)) &&
+ (ptr = readreal(ptr, matrix + 1)) &&
+ (ptr = readreal(ptr, matrix + 2)) &&
+ (ptr = readreal(ptr, matrix + 3)))
+ {
+ while (isspace(*ptr)) ptr++;
+ if (*ptr != ']')
+ ptr = (char *)0;
+ else
+ {
+ ptr++;
+ while (isspace(*ptr)) ptr++;
+ if (*ptr == '-')
+ {
+ if (which == POINTSIZE_MASK)
+ vals->values_supplied |= POINTSIZE_ARRAY;
+ else
+ vals->values_supplied |= PIXELSIZE_ARRAY;
+ }
+ else ptr = (char *)0;
+ }
+ }
+ }
+ else
+ {
+ int value;
+ if (ptr = GetInt(ptr, &value))
+ {
+ vals->values_supplied &= ~which;
+ if (value > 0)
+ {
+ matrix[3] = (double)value;
+ if (which == POINTSIZE_MASK)
+ {
+ matrix[3] /= 10.0;
+ vals->values_supplied |= POINTSIZE_SCALAR;
+ }
+ else
+ vals->values_supplied |= PIXELSIZE_SCALAR;
+ /* If we're concocting the pixelsize array from a scalar,
+ we will need to normalize element 0 for the pixel shape.
+ This is done in FontFileCompleteXLFD(). */
+ matrix[0] = matrix[3];
+ matrix[1] = matrix[2] = 0.0;
+ }
+ else if (value < 0)
+ {
+ if (which == POINTSIZE_MASK)
+ vals->values_supplied |= POINTSIZE_WILDCARD;
+ else
+ vals->values_supplied |= PIXELSIZE_WILDCARD;
+ }
+ }
+ }
+ return ptr;
+}
+
+
+static void append_ranges(fname, nranges, ranges)
+char *fname;
+int nranges;
+fsRange *ranges;
+{
+ if (nranges)
+ {
+ int i;
+
+ strcat(fname, "[");
+ for (i = 0; i < nranges && strlen(fname) < 1010; i++)
+ {
+ if (i) strcat(fname, " ");
+ sprintf(fname + strlen(fname), "%d",
+ minchar(ranges[i]));
+ if (ranges[i].min_char_low ==
+ ranges[i].max_char_low &&
+ ranges[i].min_char_high ==
+ ranges[i].max_char_high) continue;
+ sprintf(fname + strlen(fname), "_%d",
+ maxchar(ranges[i]));
+ }
+ strcat(fname, "]");
+ }
+}
+
+Bool
+FontParseXLFDName(fname, vals, subst)
+ char *fname;
+ FontScalablePtr vals;
+ int subst;
+{
+ register char *ptr;
+ register char *ptr1,
+ *ptr2,
+ *ptr3,
+ *ptr4;
+ register char *ptr5;
+ FontScalableRec tmpvals;
+ char replaceChar = '0';
+ char tmpBuf[1024];
+ int spacingLen;
+ int l;
+ char *p;
+
+ bzero(&tmpvals, sizeof(tmpvals));
+ if (subst != FONT_XLFD_REPLACE_VALUE)
+ *vals = tmpvals;
+
+ if (!(*(ptr = fname) == '-' || *ptr++ == '*' && *ptr == '-') || /* fndry */
+ !(ptr = strchr(ptr + 1, '-')) || /* family_name */
+ !(ptr1 = ptr = strchr(ptr + 1, '-')) || /* weight_name */
+ !(ptr = strchr(ptr + 1, '-')) || /* slant */
+ !(ptr = strchr(ptr + 1, '-')) || /* setwidth_name */
+ !(ptr = strchr(ptr + 1, '-')) || /* add_style_name */
+ !(ptr = strchr(ptr + 1, '-')) || /* pixel_size */
+ !(ptr = GetMatrix(ptr + 1, &tmpvals, PIXELSIZE_MASK)) ||
+ !(ptr2 = ptr = GetMatrix(ptr + 1, &tmpvals, POINTSIZE_MASK)) ||
+ !(ptr = GetInt(ptr + 1, &tmpvals.x)) || /* resolution_x */
+ !(ptr3 = ptr = GetInt(ptr + 1, &tmpvals.y)) || /* resolution_y */
+ !(ptr4 = ptr = strchr(ptr + 1, '-')) || /* spacing */
+ !(ptr5 = ptr = GetInt(ptr + 1, &tmpvals.width)) || /* average_width */
+ !(ptr = strchr(ptr + 1, '-')) || /* charset_registry */
+ strchr(ptr + 1, '-'))/* charset_encoding */
+ return FALSE;
+
+ /* Lop off HP charset subsetting enhancement. Interpreting this
+ field requires allocating some space in which to return the
+ results. So, to prevent memory leaks, this procedure will simply
+ lop off and ignore charset subsetting, and initialize the
+ relevant vals fields to zero. It's up to the caller to make its
+ own call to FontParseRanges() if it's interested in the charset
+ subsetting. */
+
+ if (subst != FONT_XLFD_REPLACE_NONE &&
+ (p = strchr(strrchr(fname, '-'), '[')))
+ {
+ tmpvals.values_supplied |= CHARSUBSET_SPECIFIED;
+ *p = '\0';
+ }
+
+ /* Fill in deprecated fields for the benefit of rasterizers that care
+ about them. */
+ tmpvals.pixel = (tmpvals.pixel_matrix[3] >= 0) ?
+ (int)(tmpvals.pixel_matrix[3] + .5) :
+ (int)(tmpvals.pixel_matrix[3] - .5);
+ tmpvals.point = (tmpvals.point_matrix[3] >= 0) ?
+ (int)(tmpvals.point_matrix[3] * 10 + .5) :
+ (int)(tmpvals.point_matrix[3] * 10 - .5);
+
+ spacingLen = ptr4 - ptr3 + 1;
+
+ switch (subst) {
+ case FONT_XLFD_REPLACE_NONE:
+ *vals = tmpvals;
+ break;
+ case FONT_XLFD_REPLACE_STAR:
+ replaceChar = '*';
+ case FONT_XLFD_REPLACE_ZERO:
+ strcpy(tmpBuf, ptr2);
+ ptr5 = tmpBuf + (ptr5 - ptr2);
+ ptr3 = tmpBuf + (ptr3 - ptr2);
+ ptr2 = tmpBuf;
+ ptr = ptr1 + 1;
+
+ ptr = strchr(ptr, '-') + 1; /* skip weight */
+ ptr = strchr(ptr, '-') + 1; /* skip slant */
+ ptr = strchr(ptr, '-') + 1; /* skip setwidth_name */
+ ptr = strchr(ptr, '-') + 1; /* skip add_style_name */
+
+ if ((ptr - fname) + spacingLen + strlen(ptr5) + 10 >= (unsigned)1024)
+ return FALSE;
+ *ptr++ = replaceChar;
+ *ptr++ = '-';
+ *ptr++ = replaceChar;
+ *ptr++ = '-';
+ *ptr++ = '*';
+ *ptr++ = '-';
+ *ptr++ = '*';
+ if (spacingLen > 2)
+ {
+ memmove(ptr, ptr3, spacingLen);
+ ptr += spacingLen;
+ }
+ else
+ {
+ *ptr++ = '-';
+ *ptr++ = '*';
+ *ptr++ = '-';
+ }
+ *ptr++ = replaceChar;
+ strcpy(ptr, ptr5);
+ *vals = tmpvals;
+ break;
+ case FONT_XLFD_REPLACE_VALUE:
+ if (vals->values_supplied & PIXELSIZE_MASK)
+ {
+ tmpvals.values_supplied =
+ (tmpvals.values_supplied & ~PIXELSIZE_MASK) |
+ (vals->values_supplied & PIXELSIZE_MASK);
+ tmpvals.pixel_matrix[0] = vals->pixel_matrix[0];
+ tmpvals.pixel_matrix[1] = vals->pixel_matrix[1];
+ tmpvals.pixel_matrix[2] = vals->pixel_matrix[2];
+ tmpvals.pixel_matrix[3] = vals->pixel_matrix[3];
+ }
+ if (vals->values_supplied & POINTSIZE_MASK)
+ {
+ tmpvals.values_supplied =
+ (tmpvals.values_supplied & ~POINTSIZE_MASK) |
+ (vals->values_supplied & POINTSIZE_MASK);
+ tmpvals.point_matrix[0] = vals->point_matrix[0];
+ tmpvals.point_matrix[1] = vals->point_matrix[1];
+ tmpvals.point_matrix[2] = vals->point_matrix[2];
+ tmpvals.point_matrix[3] = vals->point_matrix[3];
+ }
+ if (vals->x >= 0)
+ tmpvals.x = vals->x;
+ if (vals->y >= 0)
+ tmpvals.y = vals->y;
+ if (vals->width >= 0)
+ tmpvals.width = vals->width;
+ else if (vals->width < -1) /* overload: -1 means wildcard */
+ tmpvals.width = -vals->width;
+
+
+ p = ptr1 + 1; /* weight field */
+ l = strchr(p, '-') - p;
+ sprintf(tmpBuf, "%*.*s", l, l, p);
+
+ p += l + 1; /* slant field */
+ l = strchr(p, '-') - p;
+ sprintf(tmpBuf + strlen(tmpBuf), "-%*.*s", l, l, p);
+
+ p += l + 1; /* setwidth_name */
+ l = strchr(p, '-') - p;
+ sprintf(tmpBuf + strlen(tmpBuf), "-%*.*s", l, l, p);
+
+ p += l + 1; /* add_style_name field */
+ l = strchr(p, '-') - p;
+ sprintf(tmpBuf + strlen(tmpBuf), "-%*.*s", l, l, p);
+
+ strcat(tmpBuf, "-");
+ if ((tmpvals.values_supplied & PIXELSIZE_MASK) == PIXELSIZE_ARRAY)
+ {
+ char buffer[80];
+ strcat(tmpBuf, "[");
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.pixel_matrix[0],
+ buffer, 0));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.pixel_matrix[1],
+ buffer, 1));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.pixel_matrix[2],
+ buffer, 1));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.pixel_matrix[3],
+ buffer, 1));
+ strcat(tmpBuf, "]");
+ }
+ else
+ {
+ sprintf(tmpBuf + strlen(tmpBuf), "%d",
+ (int)(tmpvals.pixel_matrix[3] + .5));
+ }
+ strcat(tmpBuf, "-");
+ if ((tmpvals.values_supplied & POINTSIZE_MASK) == POINTSIZE_ARRAY)
+ {
+ char buffer[80];
+ strcat(tmpBuf, "[");
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.point_matrix[0],
+ buffer, 0));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.point_matrix[1],
+ buffer, 1));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.point_matrix[2],
+ buffer, 1));
+ strcat(tmpBuf, xlfd_double_to_text(tmpvals.point_matrix[3],
+ buffer, 1));
+ strcat(tmpBuf, "]");
+ }
+ else
+ {
+ sprintf(tmpBuf + strlen(tmpBuf), "%d",
+ (int)(tmpvals.point_matrix[3] * 10.0 + .5));
+ }
+ sprintf(tmpBuf + strlen(tmpBuf), "-%d-%d%*.*s%d%s",
+ tmpvals.x, tmpvals.y,
+ spacingLen, spacingLen, ptr3, tmpvals.width, ptr5);
+ strcpy(ptr1 + 1, tmpBuf);
+ if ((vals->values_supplied & CHARSUBSET_SPECIFIED) && !vals->nranges)
+ strcat(fname, "[]");
+ else
+ append_ranges(fname, vals->nranges, vals->ranges);
+ break;
+ }
+ return TRUE;
+}
+
+fsRange *FontParseRanges(name, nranges)
+char *name;
+int *nranges;
+{
+ int n;
+ unsigned long l;
+ char *p1, *p2;
+ fsRange *result = (fsRange *)0;
+
+ name = strchr(name, '-');
+ for (n = 1; name && n < 14; n++)
+ name = strchr(name + 1, '-');
+
+ *nranges = 0;
+ if (!name || !(p1 = strchr(name, '['))) return (fsRange *)0;
+ p1++;
+
+ while (*p1 && *p1 != ']')
+ {
+ fsRange thisrange;
+
+ l = strtol(p1, &p2, 0);
+ if (p2 == p1 || l > 0xffff) break;
+ thisrange.max_char_low = thisrange.min_char_low = l & 0xff;
+ thisrange.max_char_high = thisrange.min_char_high = l >> 8;
+
+ p1 = p2;
+ if (*p1 == ']' || *p1 == ' ')
+ {
+ while (*p1 == ' ') p1++;
+ if (add_range(&thisrange, nranges, &result, TRUE) != Successful)
+ break;
+ }
+ else if (*p1 == '_')
+ {
+ l = strtol(++p1, &p2, 0);
+ if (p2 == p1 || l > 0xffff) break;
+ thisrange.max_char_low = l & 0xff;
+ thisrange.max_char_high = l >> 8;
+ p1 = p2;
+ if (*p1 == ']' || *p1 == ' ')
+ {
+ while (*p1 == ' ') p1++;
+ if (add_range(&thisrange, nranges, &result, TRUE) != Successful)
+ break;
+ }
+ }
+ else break;
+ }
+
+ return result;
+}
projects / rdpsrv / blobdiff