+/* XLFD parser/generator */
+
+/** Indices to each field of split font name. */
+
+enum xlfd_field_idx
+ {
+ XLFD_FOUNDRY,
+ XLFD_FAMILY,
+ XLFD_WEIGHT,
+ XLFD_SLANT,
+ XLFD_SWIDTH,
+ XLFD_ADSTYLE,
+ XLFD_PIXEL,
+ XLFD_POINT,
+ XLFD_RESX,
+ XLFD_RESY,
+ XLFD_SPACING,
+ XLFD_AVGWIDTH,
+ XLFD_REGISTRY, /* This contains ENCODING. */
+ /* anchor */
+ XLFD_FIELD_MAX
+ };
+
+static int
+xlfd_parse_name (char *name, MFont *font)
+{
+ char *field[XLFD_FIELD_MAX];
+ unsigned short size, resy, avgwidth;
+ MSymbol attrs[MFONT_PROPERTY_MAX];
+ char copy[513];
+ int i;
+ char *p;
+
+ if (name[0] != '-')
+ return -1;
+
+ field[0] = copy;
+ for (i = 1, p = copy, name++; *name; p++, name++)
+ {
+ if (p - copy > 512)
+ return -1;
+ if (*name == '-'
+ && i < XLFD_FIELD_MAX)
+ {
+ *p = '\0';
+ if (field[i - 1][0] == '*')
+ field[i - 1] = NULL;
+ field[i++] = p + 1;
+ }
+ else
+ *p = tolower (*name);
+ }
+ *p = '\0';
+ if (field[i - 1][0] == '*')
+ field[i - 1] = NULL;
+ while (i < XLFD_FIELD_MAX)
+ field[i++] = NULL;
+
+ resy = field[XLFD_RESY] ? atoi (field[XLFD_RESY]) : 0;
+ avgwidth = ((field[XLFD_AVGWIDTH] && isdigit (field[XLFD_AVGWIDTH][0]))
+ ? atoi (field[XLFD_AVGWIDTH]) : 1);
+ if (! avgwidth)
+ size = 0;
+ else if (! field[XLFD_PIXEL])
+ size = field[XLFD_POINT] ? atoi (field[XLFD_POINT]) * resy / 72 : 0;
+ else if (field[XLFD_PIXEL][0] == '[')
+ {
+ /* The pixel size field specifies a transformation matrix of the
+ form "[A B C D]". The XLFD spec says that the scalar value N
+ for the pixel size is equivalent to D. */
+ char *p0 = field[XLFD_PIXEL] + 1, *p1;
+ double d;
+
+ for (i = 0; i < 4; i++, p0 = p1)
+ d = strtod (p0, &p1);
+ size = d * 10;
+ }
+ else
+ size = atoi (field[XLFD_PIXEL]) * 10;
+
+ attrs[MFONT_FOUNDRY]
+ = field[XLFD_FOUNDRY] ? msymbol (field[XLFD_FOUNDRY]) : Mnil;
+ attrs[MFONT_FAMILY]
+ = field[XLFD_FAMILY] ? msymbol (field[XLFD_FAMILY]) : Mnil;
+ attrs[MFONT_WEIGHT]
+ = field[XLFD_WEIGHT] ? msymbol (field[XLFD_WEIGHT]) : Mnil;
+ attrs[MFONT_STYLE]
+ = field[XLFD_SLANT] ? msymbol (field[XLFD_SLANT]) : Mnil;
+ attrs[MFONT_STRETCH]
+ = field[XLFD_SWIDTH] ? msymbol (field[XLFD_SWIDTH]) : Mnil;
+ attrs[MFONT_ADSTYLE]
+ = field[XLFD_ADSTYLE] ? msymbol (field[XLFD_ADSTYLE]) : Mnil;
+ attrs[MFONT_REGISTRY]
+ = field[XLFD_REGISTRY] ? msymbol (field[XLFD_REGISTRY]) : Mnil;
+ mfont__set_spec (font, attrs, size, resy);
+ return 0;
+}
+
+static char *
+xlfd_unparse_name (MFont *font)
+{
+ MSymbol prop[7];
+ char name[513];
+ char *str[7];
+ int len, i;
+ unsigned short size, resy;
+
+ prop[0] = (MSymbol) mfont_get_prop (font, Mfoundry);
+ prop[1] = (MSymbol) mfont_get_prop (font, Mfamily);
+ prop[2] = (MSymbol) mfont_get_prop (font, Mweight);
+ prop[3] = (MSymbol) mfont_get_prop (font, Mstyle);
+ prop[4] = (MSymbol) mfont_get_prop (font, Mstretch);
+ prop[5] = (MSymbol) mfont_get_prop (font, Madstyle);
+ prop[6] = (MSymbol) mfont_get_prop (font, Mregistry);
+ for (len = 0, i = 0; i < 7; i++)
+ {
+ if (prop[i] != Mnil)
+ {
+ str[i] = msymbol_name (prop[i]);
+ len += strlen (str[i]);
+ }
+ else
+ {
+ str[i] = "*";
+ len++;
+ }
+ }
+ if ((len
+ + 12 /* 12 dashes */
+ + 3 /* 3 asterisks */
+ + 30 /* 3 integers (each 10 digits) */
+ + 1) /* '\0' terminal */
+ > 513)
+ return NULL;
+
+ size = (int) mfont_get_prop (font, Msize);
+ if ((size % 10) < 5)
+ size /= 10;
+ else
+ size = size / 10 + 1;
+ resy = (int) mfont_get_prop (font, Mresolution);
+
+ sprintf (name, "-%s-%s-%s-%s-%s-%s-%d-*-%d-%d-*-*-%s",
+ str[0], str[1], str[2], str[3], str[4], str[5],
+ size, resy, resy, str[6]);
+ return strdup (name);
+}
projects / m17n / m17n-lib.git / blobdiff