Add support for multibyte characters, based on Bruno Haible's work
in the util-linux package.
This commit is contained in:
Tim J. Robbins
parent
dfa9c64b20
commit
e5afeeb3be
@ -32,7 +32,7 @@
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.\" @(#)ul.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd July 16, 2004
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.Dd July 30, 2004
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.Dt UL 1
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.Os
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.Sh NAME
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@ -76,23 +76,14 @@ Overrides the terminal type specified in the environment with
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.Ar terminal .
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.El
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.Sh ENVIRONMENT
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The following environment variable is used:
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.Bl -tag -width TERM
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.It Ev TERM
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The
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.Ev LANG , LC_ALL , LC_CTYPE
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and
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.Ev TERM
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variable is used to relate a tty device
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with its device capability description (see
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.Xr termcap 5 ) .
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.Ev TERM
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is set at login time, either by the default terminal type
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specified in
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.Pa /etc/ttys
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or as set during the login process by the user in their
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.Pa login
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file (see
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.Xr environ 7 ) .
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.El
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environment variables affect the execution of
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.Nm
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as described in
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.Xr environ 7 .
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.Sh SEE ALSO
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.Xr colcrt 1 ,
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.Xr man 1 ,
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@ -104,8 +95,6 @@ command usually outputs a series of backspaces and underlines intermixed
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with the text to indicate underlining.
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No attempt is made to optimize
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the backward motion.
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.Pp
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Multibyte characters are not recognized.
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.Sh HISTORY
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The
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.Nm
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112
usr.bin/ul/ul.c
112
usr.bin/ul/ul.c
@ -46,11 +46,14 @@ static const char rcsid[] =
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#endif /* not lint */
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#include <err.h>
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termcap.h>
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#include <unistd.h>
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#include <wchar.h>
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#include <wctype.h>
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#define IESC '\033'
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#define SO '\016'
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@ -75,7 +78,8 @@ const char
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struct CHAR {
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char c_mode;
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char c_char;
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wchar_t c_char;
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int c_width; /* width or -1 if multi-column char. filler */
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} ;
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struct CHAR obuf[MAXBUF];
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@ -96,7 +100,7 @@ void iattr(void);
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void overstrike(void);
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void flushln(void);
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void filter(FILE *);
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void outc(int);
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void outc(wint_t, int);
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#define PRINT(s) if (s == NULL) /* void */; else tputs(s, 1, outchar)
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@ -108,6 +112,8 @@ main(int argc, char **argv)
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FILE *f;
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char termcap[1024];
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setlocale(LC_ALL, "");
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termtype = getenv("TERM");
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if (termtype == NULL || (argv[0][0] == 'c' && !isatty(1)))
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termtype = "lpr";
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@ -166,9 +172,10 @@ usage(void)
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void
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filter(FILE *f)
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{
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int c;
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wint_t c;
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int i, w;
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while ((c = getc(f)) != EOF && col < MAXBUF) switch(c) {
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while ((c = getwc(f)) != WEOF && col < MAXBUF) switch(c) {
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case '\b':
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if (col > 0)
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@ -194,7 +201,7 @@ filter(FILE *f)
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continue;
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case IESC:
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switch (c = getc(f)) {
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switch (c = getwc(f)) {
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case HREV:
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if (halfpos == 0) {
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@ -232,10 +239,19 @@ filter(FILE *f)
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continue;
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case '_':
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if (obuf[col].c_char)
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obuf[col].c_mode |= UNDERL | mode;
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else
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obuf[col].c_char = '_';
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if (obuf[col].c_char || obuf[col].c_width < 0) {
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while (col > 0 && obuf[col].c_width < 0)
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col--;
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w = obuf[col].c_width;
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for (i = 0; i < w; i++)
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obuf[col++].c_mode |= UNDERL | mode;
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if (col > maxcol)
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maxcol = col;
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continue;
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}
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obuf[col].c_char = '_';
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obuf[col].c_width = 1;
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/* FALLTHROUGH */
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case ' ':
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col++;
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if (col > maxcol)
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@ -248,23 +264,35 @@ filter(FILE *f)
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case '\f':
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flushln();
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putchar('\f');
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putwchar('\f');
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continue;
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default:
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if (c < ' ') /* non printing */
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if ((w = wcwidth(c)) <= 0) /* non printing */
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continue;
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if (obuf[col].c_char == '\0') {
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obuf[col].c_char = c;
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obuf[col].c_mode = mode;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode = mode;
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obuf[col].c_width = w;
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for (i = 1; i < w; i++)
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obuf[col + i].c_width = -1;
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} else if (obuf[col].c_char == '_') {
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obuf[col].c_char = c;
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obuf[col].c_mode |= UNDERL|mode;
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} else if (obuf[col].c_char == c)
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obuf[col].c_mode |= BOLD|mode;
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else
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obuf[col].c_mode = mode;
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col++;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode |= UNDERL|mode;
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obuf[col].c_width = w;
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for (i = 1; i < w; i++)
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obuf[col + i].c_width = -1;
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} else if (obuf[col].c_char == c) {
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode |= BOLD|mode;
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} else {
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w = obuf[col].c_width;
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for (i = 0; i < w; i++)
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obuf[col + i].c_mode = mode;
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}
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col += w;
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if (col > maxcol)
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maxcol = col;
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continue;
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@ -291,16 +319,18 @@ flushln(void)
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if (upln)
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PRINT(CURS_RIGHT);
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else
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outc(' ');
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outc(' ', 1);
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} else
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outc(obuf[i].c_char);
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outc(obuf[i].c_char, obuf[i].c_width);
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if (obuf[i].c_width > 1)
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i += obuf[i].c_width - 1;
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}
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if (lastmode != NORMAL) {
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setnewmode(0);
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}
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if (must_overstrike && hadmodes)
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overstrike();
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putchar('\n');
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putwchar('\n');
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if (iflag && hadmodes)
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iattr();
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(void)fflush(stdout);
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@ -317,8 +347,8 @@ void
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overstrike(void)
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{
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int i;
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char lbuf[256];
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char *cp = lbuf;
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wchar_t lbuf[256];
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wchar_t *cp = lbuf;
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int hadbold=0;
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/* Set up overstrike buffer */
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@ -333,21 +363,23 @@ overstrike(void)
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break;
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case BOLD:
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*cp++ = obuf[i].c_char;
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if (obuf[i].c_width > 1)
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i += obuf[i].c_width - 1;
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hadbold=1;
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break;
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}
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putchar('\r');
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putwchar('\r');
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for (*cp=' '; *cp==' '; cp--)
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*cp = 0;
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for (cp=lbuf; *cp; cp++)
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putchar(*cp);
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putwchar(*cp);
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if (hadbold) {
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putchar('\r');
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putwchar('\r');
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for (cp=lbuf; *cp; cp++)
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putchar(*cp=='_' ? ' ' : *cp);
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putchar('\r');
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putwchar(*cp=='_' ? ' ' : *cp);
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putwchar('\r');
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for (cp=lbuf; *cp; cp++)
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putchar(*cp=='_' ? ' ' : *cp);
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putwchar(*cp=='_' ? ' ' : *cp);
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}
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}
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@ -355,8 +387,8 @@ void
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iattr(void)
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{
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int i;
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char lbuf[256];
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char *cp = lbuf;
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wchar_t lbuf[256];
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wchar_t *cp = lbuf;
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for (i=0; i<maxcol; i++)
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switch (obuf[i].c_mode) {
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@ -371,8 +403,8 @@ iattr(void)
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for (*cp=' '; *cp==' '; cp--)
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*cp = 0;
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for (cp=lbuf; *cp; cp++)
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putchar(*cp);
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putchar('\n');
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putwchar(*cp);
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putwchar('\n');
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}
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void
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@ -463,18 +495,22 @@ initcap(void)
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int
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outchar(int c)
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{
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return(putchar(c & 0177));
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return (putwchar(c) != WEOF ? c : EOF);
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}
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static int curmode = 0;
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void
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outc(int c)
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outc(wint_t c, int width)
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{
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putchar(c);
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int i;
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putwchar(c);
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if (must_use_uc && (curmode&UNDERL)) {
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PRINT(CURS_LEFT);
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PRINT(UNDER_CHAR);
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for (i = 0; i < width; i++)
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PRINT(CURS_LEFT);
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for (i = 0; i < width; i++)
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PRINT(UNDER_CHAR);
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}
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}
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