From 66ee8158b69525e12060ef558cb5d77feadab1dc Mon Sep 17 00:00:00 2001
From: Karel Zak
Date: Thu, 7 Dec 2006 00:25:44 +0100
Subject: Imported from util-linux-2.10s tarball.

---
 text-utils/colcrt.c | 179 +++++++++++++++++++++++++++++-----------------------
 1 file changed, 101 insertions(+), 78 deletions(-)

(limited to 'text-utils/colcrt.c')

diff --git a/text-utils/colcrt.c b/text-utils/colcrt.c
index 55138f161..efb176f31 100644
--- a/text-utils/colcrt.c
+++ b/text-utils/colcrt.c
@@ -39,6 +39,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>		/* for close() */
 #include <string.h>
 #include "nls.h"
@@ -72,13 +73,11 @@ char	suppresul;
 char	printall;
 
 char	*progname;
+void colcrt(FILE *f);
 
 int
-main(int argc, char **argv)
-{
+main(int argc, char **argv) {
 	FILE *f;
-	wint_t c;
-	wchar_t *cp, *dp;
 
 	setlocale(LC_ALL, "");
 	bindtextdomain(PACKAGE, LOCALEDIR);
@@ -113,78 +112,7 @@ main(int argc, char **argv)
 			argc--;
 			argv++;
 		}
-		for (;;) {
-			c = getwc(f);
-			if (c == -1) {
-				pflush(outline);
-				fflush(stdout);
-				break;
-			}
-			switch (c) {
-				case '\n':
-					if (outline >= 265)
-						pflush(62);
-					outline += 2;
-					outcol = 0;
-					continue;
-				case '\016':
-					case '\017':
-					continue;
-				case 033:
-					c = getwc(f);
-					switch (c) {
-						case '9':
-							if (outline >= 266)
-								pflush(62);
-							outline++;
-							continue;
-						case '8':
-							if (outline >= 1)
-								outline--;
-							continue;
-						case '7':
-							outline -= 2;
-							if (outline < 0)
-								outline = 0;
-							continue;
-						default:
-							continue;
-					}
-				case '\b':
-					if (outcol)
-						outcol--;
-					continue;
-				case '\t':
-					outcol += 8;
-					outcol &= ~7;
-					outcol--;
-					c = ' ';
-				default:
-					if (outcol >= 132) {
-						outcol++;
-						continue;
-					}
-					cp = &page[outline][outcol];
-					outcol++;
-					if (c == '_') {
-						if (suppresul)
-							continue;
-						cp += 132;
-						c = '-';
-					}
-					if (*cp == 0) {
-						*cp = c;
-						dp = cp - outcol;
-						for (cp--; cp >= dp && *cp == 0; cp--)
-							*cp = ' ';
-					} else
-						if (plus(c, *cp) || plus(*cp, c))
-							*cp = '+';
-						else if (*cp == ' ' || *cp == 0)
-							*cp = c;
-					continue;
-			}
-		}
+		colcrt(f);
 		if (f != stdin)
 			fclose(f);
 	} while (argc > 0);
@@ -194,6 +122,95 @@ main(int argc, char **argv)
 	return 0;
 }
 
+void
+colcrt(FILE *f) {
+	wint_t c;
+	wchar_t *cp, *dp;
+	int i, w;
+
+	for (;;) {
+		c = getwc(f);
+		if (c == WEOF) {
+			pflush(outline);
+			fflush(stdout);
+			break;
+		}
+		switch (c) {
+		case '\n':
+			if (outline >= 265)
+				pflush(62);
+			outline += 2;
+			outcol = 0;
+			continue;
+		case '\016':
+		case '\017':
+			continue;
+		case 033:
+			c = getwc(f);
+			switch (c) {
+			case '9':
+				if (outline >= 266)
+					pflush(62);
+				outline++;
+				continue;
+			case '8':
+				if (outline >= 1)
+					outline--;
+				continue;
+			case '7':
+				outline -= 2;
+				if (outline < 0)
+					outline = 0;
+				continue;
+			default:
+				continue;
+			}
+		case '\b':
+			if (outcol)
+				outcol--;
+			continue;
+		case '\t':
+			outcol += 8;
+			outcol &= ~7;
+			outcol--;
+			c = ' ';
+		default:
+			w = wcwidth(c);
+			if (outcol + w > 132) {
+				outcol++;
+				continue;
+			}
+			cp = &page[outline][outcol];
+			outcol += w;
+			if (c == '_') {
+				if (suppresul)
+					continue;
+				cp += 132;
+				c = '-';
+			}
+			if (*cp == 0) {
+				/* trick! */
+				for (i=0; i<w; i++)
+					cp[i] = c;
+				dp = cp - (outcol-w);
+				for (cp--; cp >= dp && *cp == 0; cp--)
+					*cp = ' ';
+			} else {
+				if (plus(c, *cp) || plus(*cp, c))
+					*cp = '+';
+				else if (*cp == ' ' || *cp == 0) {
+					for (i=1; i<w; i++)
+						if (cp[i] != ' ' && cp[i] != 0)
+							continue;
+					for (i=0; i<w; i++)
+						cp[i] = c;
+				}
+			}
+			continue;
+		}
+	}
+}
+
 int plus(wchar_t c, wchar_t d)
 {
 
@@ -207,7 +224,7 @@ void pflush(int ol)
 	register int i;
 	register wchar_t *cp;
 	char lastomit;
-	int l;
+	int l, w;
 
 	l = ol;
 	lastomit = 0;
@@ -226,7 +243,13 @@ void pflush(int ol)
 			continue;
 		}
 		lastomit = 0;
-		fputws(cp, stdout);
+		while (*cp) {
+			if ((w = wcwidth(*cp)) > 0) {
+				putwchar(*cp);
+				cp += w;
+			} else
+				cp++;
+		}
 		putwchar('\n');
 	}
 	bcopy(page[ol], page, (267 - ol) * 132 * sizeof(wchar_t));
-- 
cgit v1.2.3-55-g7522