add dict

src/cmd/dict/pcollins.c

@@ -0,0 +1,226 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include "dict.h"
+
+/*
+ * Routines for handling dictionaries in the "Paperback Collins"
+ * format (with tags surrounded by >....<)
+ */
+enum {
+	Buflen=1000,
+};
+
+/* More special runes */
+enum {
+	B = MULTIE+1,	/* bold */
+	H,		/* headword start */
+	I,		/* italics */
+	Ps,		/* pronunciation start */
+	Pe,		/* pronunciation end */
+	R,		/* roman */
+	X,		/* headword end */
+};
+
+/* Assoc tables must be sorted on first field */
+
+static Assoc tagtab[] = {
+	{"AA",		0xc5},
+	{"AC",		LACU},
+	{"B",		B},
+	{"CE",		LCED},
+	{"CI",		LFRN},
+	{"Di",		0x131},
+	{"EL",		0x2d},
+	{"GR",		LGRV},
+	{"H",		H},
+	{"I",		I},
+	{"OE",		0x152},
+	{"R",		R},
+	{"TI",		LTIL},
+	{"UM",		LUML},
+	{"X",		X},
+	{"[",		Ps},
+	{"]",		Pe},
+	{"ac",		LACU},
+	{"ce",		LCED},
+	{"ci",		LFRN},
+	{"gr",		LGRV},
+	{"oe",		0x153},
+	{"supe",	0x65},		/* should be raised */
+	{"supo",	0x6f},		/* should be raised */
+	{"ti",		LTIL},
+	{"um",		LUML},
+	{"{",		Ps},
+	{"~",		0x7e},
+	{"~~",		MTT},
+};
+
+static Rune normtab[128] = {
+	/*0*/	/*1*/	/*2*/	/*3*/	/*4*/	/*5*/	/*6*/	/*7*/
+/*00*/	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,
+	NONE,	NONE,	0x20,	NONE,	NONE,	NONE,	NONE,	NONE,
+/*10*/	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,
+	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,	NONE,
+/*20*/	0x20,	0x21,	0x22,	0x23,	0x24,	0x25,	0x26,	'\'',
+	0x28,	0x29,	0x2a,	0x2b,	0x2c,	0x2d,	0x2e,	0x2f,
+/*30*/  0x30,	0x31,	0x32,	0x33,	0x34,	0x35,	0x36,	0x37,
+	0x38,	0x39,	0x3a,	0x3b,	TAGE,	0x3d,	TAGS,	0x3f,
+/*40*/  0x40,	0x41,	0x42,	0x43,	0x44,	0x45,	0x46,	0x47,
+	0x48,	0x49,	0x4a,	0x4b,	L'L',	0x4d,	0x4e,	0x4f,
+/*50*/	0x50,	0x51,	0x52,	0x53,	0x54,	0x55,	0x56,	0x57,
+	0x58,	0x59,	0x5a,	0x5b,	L'\\',	0x5d,	0x5e,	0x5f,
+/*60*/	0x60,	0x61,	0x62,	0x63,	0x64,	0x65,	0x66,	0x67,
+	0x68,	0x69,	0x6a,	0x6b,	0x6c,	0x6d,	0x6e,	0x6f,
+/*70*/	0x70,	0x71,	0x72,	0x73,	0x74,	0x75,	0x76,	0x77,
+	0x78,	0x79,	0x7a,	0x7b,	0x7c,	0x7d,	0x7e,	NONE,
+};
+
+static char *gettag(char *, char *);
+
+static Entry	curentry;
+static char	tag[Buflen];
+#define cursize (curentry.end-curentry.start)
+
+void
+pcollprintentry(Entry e, int cmd)
+{
+	char *p, *pe;
+	long r, rprev, t, rlig;
+	int saveoi;
+	Rune *transtab;
+
+	p = e.start;
+	pe = e.end;
+	transtab = normtab;
+	rprev = NONE;
+	changett(0, 0, 0);
+	curentry = e;
+	saveoi = 0;
+	if(cmd == 'h')
+		outinhibit = 1;
+	while(p < pe) {
+		if(cmd == 'r') {
+			outchar(*p++);
+			continue;
+		}
+		r = transtab[(*p++)&0x7F];
+		if(r < NONE) {
+			/* Emit the rune, but buffer in case of ligature */
+			if(rprev != NONE)
+				outrune(rprev);
+			rprev = r;
+		} else if(r == TAGS) {
+			p = gettag(p, pe);
+			t = lookassoc(tagtab, asize(tagtab), tag);
+			if(t == -1) {
+				if(debug && !outinhibit)
+					err("tag %ld %d %s",
+						e.doff, cursize, tag);
+				continue;
+			}
+			if(t < NONE) {
+				if(rprev != NONE)
+					outrune(rprev);
+				rprev = t;
+			} else if(t >= LIGS && t < LIGE) {
+				/* handle possible ligature */
+				rlig = liglookup(t, rprev);
+				if(rlig != NONE)
+					rprev = rlig;	/* overwrite rprev */
+				else {
+					/* could print accent, but let's not */
+					if(rprev != NONE) outrune(rprev);
+					rprev = NONE;
+				}
+			} else if(t >= MULTI && t < MULTIE) {
+				if(rprev != NONE) {
+					outrune(rprev);
+					rprev = NONE;
+				}
+				outrunes(multitab[t-MULTI]);
+			} else {
+				if(rprev != NONE) {
+					outrune(rprev);
+					rprev = NONE;
+				}
+				switch(t){
+				case H:
+					if(cmd == 'h')
+						outinhibit = 0;
+					else
+						outnl(0);
+					break;
+				case X:
+					if(cmd == 'h')
+						outinhibit = 1;
+					else
+						outchars(".  ");
+					break;
+				case Ps:
+					/* don't know enough of pron. key yet */
+					saveoi = outinhibit;
+					outinhibit = 1;
+					break;
+				case Pe:
+					outinhibit = saveoi;
+					break;
+				}
+			}
+		}
+	}
+	if(cmd == 'h')
+		outinhibit = 0;
+	outnl(0);
+}
+
+long
+pcollnextoff(long fromoff)
+{
+	long a;
+	char *p;
+
+	a = Bseek(bdict, fromoff, 0);
+	if(a < 0)
+		return -1;
+	for(;;) {
+		p = Brdline(bdict, '\n');
+		if(!p)
+			break;
+		if(p[0] == '>' && p[1] == 'H' && p[2] == '<')
+			return (Boffset(bdict)-Blinelen(bdict));
+	}
+	return -1;
+}
+
+void
+pcollprintkey(void)
+{
+	Bprint(bout, "No pronunciation key yet\n");
+}
+
+/*
+ * f points just after '>'; fe points at end of entry.
+ * Expect next characters from bin to match:
+ *  [^ <]+<
+ *     tag
+ * Accumulate the tag in tag[].
+ * Return pointer to after final '<'.
+ */
+static char *
+gettag(char *f, char *fe)
+{
+	char *t;
+	int c, i;
+
+	t = tag;
+	i = Buflen;
+	while(--i > 0) {
+		c = *f++;
+		if(c == '<' || f == fe)
+			break;
+		*t++ = c;
+	}
+	*t = 0;
+	return f;
+}