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Teach man(1) how to look inside compressed manuals

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for preprocessor directives.  Avoid use of cat(1).

PR:		bin/23585
This commit is contained in:
ru 2000-12-22 19:05:13 +00:00
parent b0fcdfbd76
commit b3f3c60dae
2 changed files with 58 additions and 72 deletions
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14
gnu/usr.bin/man/man/Makefile
View File

@ -1,9 +1,10 @@
# $FreeBSD$
#
MAN_LIBZ=YES
PROG= man
SRCS= man.c manpath.c glob.c
MAN1= man.1
BINOWN= man
BINMODE=4555
INSTALLFLAGS+= -fschg
@ -12,13 +13,20 @@ CFLAGS+= -I${LIBDESTDIR}
DPADD= ${LIBMAN}
LDADD= ${LIBMAN}
.if defined(MAN_LIBZ) && !empty(MAN_LIBZ)
DPADD+= ${LIBZ}
LDADD+= -lz
CFLAGS+=-DHAVE_LIBZ=1
.endif
CFLAGS+= -I${.CURDIR}/../lib -DSTDC_HEADERS -DPOSIX -DHAS_TROFF
CFLAGS+= -DDO_COMPRESS -DALT_SYSTEMS -DSETREUID -DCATMODE=0644
CLEANFILES+= ${MAN1}
MANDEPEND+= ${MAN1}
.PATH: ${.CURDIR}/../manpath
.include <bsd.prog.mk>
${MAN1}: ${.CURDIR}/man.man
@${ECHO} echo Making ${.TARGET:T} from ${.ALLSRC:T}; \
sed -e 's,%libdir%,${libdir},' -e 's,%bindir%,${bindir},' \
@ -26,5 +34,3 @@ ${MAN1}: ${.CURDIR}/man.man
-e 's,%manpath_config_file%,${manpath_config_file},' \
-e 's,%compress%,${compress},' \
${.CURDIR}/man.man > ${MAN1}
.include <bsd.prog.mk>

116
gnu/usr.bin/man/man/man.c
View File

@ -29,6 +29,9 @@
#include <stdio.h>
#include <string.h>
#include <signal.h>
#if HAVE_LIBZ > 0
#include <zlib.h>
#endif
#include "config.h"
#include "gripes.h"
#include "version.h"
@ -919,8 +922,13 @@ parse_roff_directive (cp, file, buf, bufsize)
int bufsize;
{
char c;
char *exp;
int first = 1;
int tbl_found = 0;
int preproc_found = 0;
int use_col = 0;
if ((exp = get_expander(file)) != NULL)
add_directive (&first, exp, file, buf, bufsize);
while ((c = *cp++) != '\0')
{
@ -931,6 +939,7 @@ parse_roff_directive (cp, file, buf, bufsize)
if (debug)
fprintf (stderr, "found eqn(1) directive\n");
preproc_found++;
if (troff)
add_directive (&first, EQN, file, buf, bufsize);
else {
@ -952,6 +961,7 @@ parse_roff_directive (cp, file, buf, bufsize)
if (debug)
fprintf (stderr, "found grap(1) directive\n");
preproc_found++;
add_directive (&first, GRAP, file, buf, bufsize);
break;
@ -961,6 +971,7 @@ parse_roff_directive (cp, file, buf, bufsize)
if (debug)
fprintf (stderr, "found pic(1) directive\n");
preproc_found++;
add_directive (&first, PIC, file, buf, bufsize);
break;
@ -970,7 +981,8 @@ parse_roff_directive (cp, file, buf, bufsize)
if (debug)
fprintf (stderr, "found tbl(1) directive\n");
tbl_found++;
preproc_found++;
use_col++;
add_directive (&first, TBL, file, buf, bufsize);
break;
@ -1004,41 +1016,40 @@ parse_roff_directive (cp, file, buf, bufsize)
done:
if (first)
return 1;
#ifdef HAS_TROFF
if (troff)
{
strncat (buf, " | ", bufsize-strlen(buf)-1);
strncat (buf, TROFF, bufsize-strlen(buf)-1);
}
add_directive (&first, TROFF, file, buf, bufsize);
else
#endif
{
strncat (buf, " | ", bufsize-strlen(buf)-1);
strncat (buf, NROFF, bufsize-strlen(buf)-1);
#ifdef __FreeBSD__
if (locale_opts != NULL)
strncat (buf, locale_opts, bufsize-strlen(buf)-1);
else
#endif
strncat (buf, " -Tascii", bufsize-strlen(buf)-1);
}
if (tbl_found && !troff && strcmp (COL, "") != 0)
{
strncat (buf, " | ", bufsize-strlen(buf)-1);
strncat (buf, COL, bufsize-strlen(buf)-1);
}
char lbuf[FILENAME_MAX];
return 0;
snprintf(lbuf, sizeof(lbuf), "%s%s", NROFF,
locale_opts == NULL ? " -Tascii" : locale_opts);
add_directive (&first, lbuf, file, buf, bufsize);
#else
add_directive (&first, NROFF " -Tascii", file, buf, bufsize);
#endif
}
if (use_col && !troff)
add_directive (&first, COL, file, buf, bufsize);
if (preproc_found)
return 0;
else
return 1;
}
char *
make_roff_command (file)
char *file;
{
#if HAVE_LIBZ > 0
gzFile fp;
#else
FILE *fp;
#endif
char line [BUFSIZ];
static char buf [BUFSIZ];
int status;
@ -1058,11 +1069,20 @@ make_roff_command (file)
gripe_roff_command_from_command_line (file);
}
#if HAVE_LIBZ > 0
if ((fp = gzopen (file, "r")) != NULL)
#else
if ((fp = fopen (file, "r")) != NULL)
#endif
{
cp = line;
#if HAVE_LIBZ > 0
gzgets (fp, line, BUFSIZ);
gzclose(fp);
#else
fgets (line, BUFSIZ, fp);
fclose(fp);
#endif
if (*cp++ == '\'' && *cp++ == '\\' && *cp++ == '"' && *cp++ == ' ')
{
if (debug)
@ -1104,51 +1124,11 @@ make_roff_command (file)
if (debug)
fprintf (stderr, "using default preprocessor sequence\n");
if ((cp = get_expander(file)) == NULL)
cp = "/bin/cat";
snprintf(buf, sizeof(buf), "%s %s | ", cp, file);
#ifdef HAS_TROFF
if (troff)
{
if (strcmp (TBL, "") != 0)
{
strncat(buf, TBL, sizeof(buf)-strlen(buf)-1);
strncat(buf, " | ", sizeof(buf)-strlen(buf)-1);
strncat(buf, TROFF, sizeof(buf)-strlen(buf)-1);
}
else
{
strncat(buf, TROFF, sizeof(buf)-strlen(buf)-1);
}
}
else
#endif
{
if (strcmp (TBL, "") != 0)
{
strncat(buf, TBL, sizeof(buf)-strlen(buf)-1);
strncat(buf, " | ", sizeof(buf)-strlen(buf)-1);
strncat(buf, NROFF, sizeof(buf)-strlen(buf)-1);
}
else
{
strncpy (buf, NROFF, sizeof(buf));
}
#ifdef __FreeBSD__
if (locale_opts != NULL)
strncat (buf, locale_opts, sizeof(buf)-strlen(buf)-1);
else
#endif
strncat (buf, " -Tascii", sizeof(buf)-strlen(buf)-1);
if (strcmp (COL, "") != 0)
{
strncat (buf, " | ", sizeof(buf)-strlen(buf)-1);
strncat (buf, COL, sizeof(buf)-strlen(buf)-1);
}
}
return buf;
status = parse_roff_directive ("t", file, buf, sizeof(buf));
if (status >= 0)
return buf;
else /* can't happen */
return NULL;
}
sig_t ohup, oint, oquit, oterm;