| Current Path : /usr/src/usr.bin/makewhatis/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/usr.bin/makewhatis/makewhatis.c |
/*-
* Copyright (c) 2002 John Rochester
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/usr.bin/makewhatis/makewhatis.c 237464 2012-06-23 00:37:32Z delphij $");
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/utsname.h>
#include <ctype.h>
#include <dirent.h>
#include <err.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stringlist.h>
#include <unistd.h>
#include <zlib.h>
#define DEFAULT_MANPATH "/usr/share/man"
#define LINE_ALLOC 4096
static char blank[] = "";
/*
* Information collected about each man page in a section.
*/
struct page_info {
char * filename;
char * name;
char * suffix;
int gzipped;
ino_t inode;
};
/*
* An entry kept for each visited directory.
*/
struct visited_dir {
dev_t device;
ino_t inode;
SLIST_ENTRY(visited_dir) next;
};
/*
* an expanding string
*/
struct sbuf {
char * content; /* the start of the buffer */
char * end; /* just past the end of the content */
char * last; /* the last allocated character */
};
/*
* Removes the last amount characters from the sbuf.
*/
#define sbuf_retract(sbuf, amount) \
((sbuf)->end -= (amount))
/*
* Returns the length of the sbuf content.
*/
#define sbuf_length(sbuf) \
((sbuf)->end - (sbuf)->content)
typedef char *edited_copy(char *from, char *to, int length);
static int append; /* -a flag: append to existing whatis */
static int verbose; /* -v flag: be verbose with warnings */
static int indent = 24; /* -i option: description indentation */
static const char *whatis_name="whatis";/* -n option: the name */
static char *common_output; /* -o option: the single output file */
static char *locale; /* user's locale if -L is used */
static char *lang_locale; /* short form of locale */
static const char *machine, *machine_arch;
static int exit_code; /* exit code to use when finished */
static SLIST_HEAD(, visited_dir) visited_dirs =
SLIST_HEAD_INITIALIZER(visited_dirs);
/*
* While the whatis line is being formed, it is stored in whatis_proto.
* When finished, it is reformatted into whatis_final and then appended
* to whatis_lines.
*/
static struct sbuf *whatis_proto;
static struct sbuf *whatis_final;
static StringList *whatis_lines; /* collected output lines */
static char tmp_file[MAXPATHLEN]; /* path of temporary file, if any */
/* A set of possible names for the NAME man page section */
static const char *name_section_titles[] = {
"NAME", "Name", "NAMN", "BEZEICHNUNG", "\xcc\xbe\xbe\xce",
"\xee\xe1\xfa\xf7\xe1\xee\xe9\xe5", NULL
};
/* A subset of the mdoc(7) commands to ignore */
static char mdoc_commands[] = "ArDvErEvFlLiNmPa";
/*
* Frees a struct page_info and its content.
*/
static void
free_page_info(struct page_info *info)
{
free(info->filename);
free(info->name);
free(info->suffix);
free(info);
}
/*
* Allocates and fills in a new struct page_info given the
* name of the man section directory and the dirent of the file.
* If the file is not a man page, returns NULL.
*/
static struct page_info *
new_page_info(char *dir, struct dirent *dirent)
{
struct page_info *info;
int basename_length;
char *suffix;
struct stat st;
info = (struct page_info *) malloc(sizeof(struct page_info));
if (info == NULL)
err(1, "malloc");
basename_length = strlen(dirent->d_name);
suffix = &dirent->d_name[basename_length];
asprintf(&info->filename, "%s/%s", dir, dirent->d_name);
if ((info->gzipped = basename_length >= 4 && strcmp(&dirent->d_name[basename_length - 3], ".gz") == 0)) {
suffix -= 3;
*suffix = '\0';
}
for (;;) {
if (--suffix == dirent->d_name || !isalnum(*suffix)) {
if (*suffix == '.')
break;
if (verbose)
warnx("%s: invalid man page name", info->filename);
free(info->filename);
free(info);
return NULL;
}
}
*suffix++ = '\0';
info->name = strdup(dirent->d_name);
info->suffix = strdup(suffix);
if (stat(info->filename, &st) < 0) {
warn("%s", info->filename);
free_page_info(info);
return NULL;
}
if (!S_ISREG(st.st_mode)) {
if (verbose && !S_ISDIR(st.st_mode))
warnx("%s: not a regular file", info->filename);
free_page_info(info);
return NULL;
}
info->inode = st.st_ino;
return info;
}
/*
* Reset an sbuf's length to 0.
*/
static void
sbuf_clear(struct sbuf *sbuf)
{
sbuf->end = sbuf->content;
}
/*
* Allocate a new sbuf.
*/
static struct sbuf *
new_sbuf(void)
{
struct sbuf *sbuf = (struct sbuf *) malloc(sizeof(struct sbuf));
sbuf->content = (char *) malloc(LINE_ALLOC);
sbuf->last = sbuf->content + LINE_ALLOC - 1;
sbuf_clear(sbuf);
return sbuf;
}
/*
* Ensure that there is enough room in the sbuf for nchars more characters.
*/
static void
sbuf_need(struct sbuf *sbuf, int nchars)
{
char *new_content;
size_t size, cntsize;
/* double the size of the allocation until the buffer is big enough */
while (sbuf->end + nchars > sbuf->last) {
size = sbuf->last + 1 - sbuf->content;
size *= 2;
cntsize = sbuf->end - sbuf->content;
new_content = (char *)malloc(size);
memcpy(new_content, sbuf->content, cntsize);
free(sbuf->content);
sbuf->content = new_content;
sbuf->end = new_content + cntsize;
sbuf->last = new_content + size - 1;
}
}
/*
* Appends a string of a given length to the sbuf.
*/
static void
sbuf_append(struct sbuf *sbuf, const char *text, int length)
{
if (length > 0) {
sbuf_need(sbuf, length);
memcpy(sbuf->end, text, length);
sbuf->end += length;
}
}
/*
* Appends a null-terminated string to the sbuf.
*/
static void
sbuf_append_str(struct sbuf *sbuf, char *text)
{
sbuf_append(sbuf, text, strlen(text));
}
/*
* Appends an edited null-terminated string to the sbuf.
*/
static void
sbuf_append_edited(struct sbuf *sbuf, char *text, edited_copy copy)
{
int length = strlen(text);
if (length > 0) {
sbuf_need(sbuf, length);
sbuf->end = copy(text, sbuf->end, length);
}
}
/*
* Strips any of a set of chars from the end of the sbuf.
*/
static void
sbuf_strip(struct sbuf *sbuf, const char *set)
{
while (sbuf->end > sbuf->content && strchr(set, sbuf->end[-1]) != NULL)
sbuf->end--;
}
/*
* Returns the null-terminated string built by the sbuf.
*/
static char *
sbuf_content(struct sbuf *sbuf)
{
*sbuf->end = '\0';
return sbuf->content;
}
/*
* Returns true if no man page exists in the directory with
* any of the names in the StringList.
*/
static int
no_page_exists(char *dir, StringList *names, char *suffix)
{
char path[MAXPATHLEN];
size_t i;
for (i = 0; i < names->sl_cur; i++) {
snprintf(path, sizeof path, "%s/%s.%s.gz", dir, names->sl_str[i], suffix);
if (access(path, F_OK) < 0) {
path[strlen(path) - 3] = '\0';
if (access(path, F_OK) < 0)
continue;
}
return 0;
}
return 1;
}
static void
trap_signal(int sig __unused)
{
if (tmp_file[0] != '\0')
unlink(tmp_file);
exit(1);
}
/*
* Attempts to open an output file. Returns NULL if unsuccessful.
*/
static FILE *
open_output(char *name)
{
FILE *output;
whatis_lines = sl_init();
if (append) {
char line[LINE_ALLOC];
output = fopen(name, "r");
if (output == NULL) {
warn("%s", name);
exit_code = 1;
return NULL;
}
while (fgets(line, sizeof line, output) != NULL) {
line[strlen(line) - 1] = '\0';
sl_add(whatis_lines, strdup(line));
}
}
if (common_output == NULL) {
snprintf(tmp_file, sizeof tmp_file, "%s.tmp", name);
name = tmp_file;
}
output = fopen(name, "w");
if (output == NULL) {
warn("%s", name);
exit_code = 1;
return NULL;
}
return output;
}
static int
linesort(const void *a, const void *b)
{
return strcmp((*(const char * const *)a), (*(const char * const *)b));
}
/*
* Writes the unique sorted lines to the output file.
*/
static void
finish_output(FILE *output, char *name)
{
size_t i;
char *prev = NULL;
qsort(whatis_lines->sl_str, whatis_lines->sl_cur, sizeof(char *), linesort);
for (i = 0; i < whatis_lines->sl_cur; i++) {
char *line = whatis_lines->sl_str[i];
if (i > 0 && strcmp(line, prev) == 0)
continue;
prev = line;
fputs(line, output);
putc('\n', output);
}
fclose(output);
sl_free(whatis_lines, 1);
if (common_output == NULL) {
rename(tmp_file, name);
unlink(tmp_file);
}
}
static FILE *
open_whatis(char *mandir)
{
char filename[MAXPATHLEN];
snprintf(filename, sizeof filename, "%s/%s", mandir, whatis_name);
return open_output(filename);
}
static void
finish_whatis(FILE *output, char *mandir)
{
char filename[MAXPATHLEN];
snprintf(filename, sizeof filename, "%s/%s", mandir, whatis_name);
finish_output(output, filename);
}
/*
* Tests to see if the given directory has already been visited.
*/
static int
already_visited(char *dir)
{
struct stat st;
struct visited_dir *visit;
if (stat(dir, &st) < 0) {
warn("%s", dir);
exit_code = 1;
return 1;
}
SLIST_FOREACH(visit, &visited_dirs, next) {
if (visit->inode == st.st_ino &&
visit->device == st.st_dev) {
warnx("already visited %s", dir);
return 1;
}
}
visit = (struct visited_dir *) malloc(sizeof(struct visited_dir));
visit->device = st.st_dev;
visit->inode = st.st_ino;
SLIST_INSERT_HEAD(&visited_dirs, visit, next);
return 0;
}
/*
* Removes trailing spaces from a string, returning a pointer to just
* beyond the new last character.
*/
static char *
trim_rhs(char *str)
{
char *rhs = &str[strlen(str)];
while (--rhs > str && isspace(*rhs))
;
*++rhs = '\0';
return rhs;
}
/*
* Returns a pointer to the next non-space character in the string.
*/
static char *
skip_spaces(char *s)
{
while (*s != '\0' && isspace(*s))
s++;
return s;
}
/*
* Returns whether the string contains only digits.
*/
static int
only_digits(char *line)
{
if (!isdigit(*line++))
return 0;
while (isdigit(*line))
line++;
return *line == '\0';
}
/*
* Returns whether the line is of one of the forms:
* .Sh NAME
* .Sh "NAME"
* etc.
* assuming that section_start is ".Sh".
*/
static int
name_section_line(char *line, const char *section_start)
{
char *rhs;
const char **title;
if (strncmp(line, section_start, 3) != 0)
return 0;
line = skip_spaces(line + 3);
rhs = trim_rhs(line);
if (*line == '"') {
line++;
if (*--rhs == '"')
*rhs = '\0';
}
for (title = name_section_titles; *title != NULL; title++)
if (strcmp(*title, line) == 0)
return 1;
return 0;
}
/*
* Copies characters while removing the most common nroff/troff
* markup:
* \(em, \(mi, \s[+-N], \&
* \fF, \f(fo, \f[font]
* \*s, \*(st, \*[stringvar]
*/
static char *
de_nroff_copy(char *from, char *to, int fromlen)
{
char *from_end = &from[fromlen];
while (from < from_end) {
switch (*from) {
case '\\':
switch (*++from) {
case '(':
if (strncmp(&from[1], "em", 2) == 0 ||
strncmp(&from[1], "mi", 2) == 0) {
from += 3;
continue;
}
break;
case 's':
if (*++from == '-')
from++;
while (isdigit(*from))
from++;
continue;
case 'f':
case '*':
if (*++from == '(')
from += 3;
else if (*from == '[') {
while (*++from != ']' && from < from_end);
from++;
} else
from++;
continue;
case '&':
from++;
continue;
}
break;
}
*to++ = *from++;
}
return to;
}
/*
* Appends a string with the nroff formatting removed.
*/
static void
add_nroff(char *text)
{
sbuf_append_edited(whatis_proto, text, de_nroff_copy);
}
/*
* Appends "name(suffix), " to whatis_final.
*/
static void
add_whatis_name(char *name, char *suffix)
{
if (*name != '\0') {
sbuf_append_str(whatis_final, name);
sbuf_append(whatis_final, "(", 1);
sbuf_append_str(whatis_final, suffix);
sbuf_append(whatis_final, "), ", 3);
}
}
/*
* Processes an old-style man(7) line. This ignores commands with only
* a single number argument.
*/
static void
process_man_line(char *line)
{
if (*line == '.') {
while (isalpha(*++line))
;
line = skip_spaces(line);
if (only_digits(line))
return;
} else
line = skip_spaces(line);
if (*line != '\0') {
add_nroff(line);
sbuf_append(whatis_proto, " ", 1);
}
}
/*
* Processes a new-style mdoc(7) line.
*/
static void
process_mdoc_line(char *line)
{
int xref;
int arg = 0;
char *line_end = &line[strlen(line)];
int orig_length = sbuf_length(whatis_proto);
char *next;
if (*line == '\0')
return;
if (line[0] != '.' || !isupper(line[1]) || !islower(line[2])) {
add_nroff(skip_spaces(line));
sbuf_append(whatis_proto, " ", 1);
return;
}
xref = strncmp(line, ".Xr", 3) == 0;
line += 3;
while ((line = skip_spaces(line)) < line_end) {
if (*line == '"') {
next = ++line;
for (;;) {
next = strchr(next, '"');
if (next == NULL)
break;
memmove(next, next + 1, strlen(next));
line_end--;
if (*next != '"')
break;
next++;
}
} else
next = strpbrk(line, " \t");
if (next != NULL)
*next++ = '\0';
else
next = line_end;
if (isupper(*line) && islower(line[1]) && line[2] == '\0') {
if (strcmp(line, "Ns") == 0) {
arg = 0;
line = next;
continue;
}
if (strstr(mdoc_commands, line) != NULL) {
line = next;
continue;
}
}
if (arg > 0 && strchr(",.:;?!)]", *line) == 0) {
if (xref) {
sbuf_append(whatis_proto, "(", 1);
add_nroff(line);
sbuf_append(whatis_proto, ")", 1);
xref = 0;
line = blank;
} else
sbuf_append(whatis_proto, " ", 1);
}
add_nroff(line);
arg++;
line = next;
}
if (sbuf_length(whatis_proto) > orig_length)
sbuf_append(whatis_proto, " ", 1);
}
/*
* Collects a list of comma-separated names from the text.
*/
static void
collect_names(StringList *names, char *text)
{
char *arg;
for (;;) {
arg = text;
text = strchr(text, ',');
if (text != NULL)
*text++ = '\0';
sl_add(names, arg);
if (text == NULL)
return;
if (*text == ' ')
text++;
}
}
enum { STATE_UNKNOWN, STATE_MANSTYLE, STATE_MDOCNAME, STATE_MDOCDESC };
/*
* Processes a man page source into a single whatis line and adds it
* to whatis_lines.
*/
static void
process_page(struct page_info *page, char *section_dir)
{
gzFile in;
char buffer[4096];
char *line;
StringList *names;
char *descr;
int state = STATE_UNKNOWN;
size_t i;
sbuf_clear(whatis_proto);
if ((in = gzopen(page->filename, "r")) == NULL) {
warn("%s", page->filename);
exit_code = 1;
return;
}
while (gzgets(in, buffer, sizeof buffer) != NULL) {
line = buffer;
if (strncmp(line, ".\\\"", 3) == 0) /* ignore comments */
continue;
switch (state) {
/*
* haven't reached the NAME section yet.
*/
case STATE_UNKNOWN:
if (name_section_line(line, ".SH"))
state = STATE_MANSTYLE;
else if (name_section_line(line, ".Sh"))
state = STATE_MDOCNAME;
continue;
/*
* Inside an old-style .SH NAME section.
*/
case STATE_MANSTYLE:
if (strncmp(line, ".SH", 3) == 0)
break;
if (strncmp(line, ".SS", 3) == 0)
break;
trim_rhs(line);
if (strcmp(line, ".") == 0)
continue;
if (strncmp(line, ".IX", 3) == 0) {
line += 3;
line = skip_spaces(line);
}
process_man_line(line);
continue;
/*
* Inside a new-style .Sh NAME section (the .Nm part).
*/
case STATE_MDOCNAME:
trim_rhs(line);
if (strncmp(line, ".Nm", 3) == 0) {
process_mdoc_line(line);
continue;
} else {
if (strcmp(line, ".") == 0)
continue;
sbuf_append(whatis_proto, "- ", 2);
state = STATE_MDOCDESC;
}
/* fall through */
/*
* Inside a new-style .Sh NAME section (after the .Nm-s).
*/
case STATE_MDOCDESC:
if (strncmp(line, ".Sh", 3) == 0)
break;
trim_rhs(line);
if (strcmp(line, ".") == 0)
continue;
process_mdoc_line(line);
continue;
}
break;
}
gzclose(in);
sbuf_strip(whatis_proto, " \t.-");
line = sbuf_content(whatis_proto);
/*
* line now contains the appropriate data, but without
* the proper indentation or the section appended to each name.
*/
descr = strstr(line, " - ");
if (descr == NULL) {
descr = strchr(line, ' ');
if (descr == NULL) {
if (verbose)
fprintf(stderr, " ignoring junk description \"%s\"\n", line);
return;
}
*descr++ = '\0';
} else {
*descr = '\0';
descr += 3;
}
names = sl_init();
collect_names(names, line);
sbuf_clear(whatis_final);
if (!sl_find(names, page->name) && no_page_exists(section_dir, names, page->suffix)) {
/*
* Add the page name since that's the only thing that
* man(1) will find.
*/
add_whatis_name(page->name, page->suffix);
}
for (i = 0; i < names->sl_cur; i++)
add_whatis_name(names->sl_str[i], page->suffix);
sl_free(names, 0);
sbuf_retract(whatis_final, 2); /* remove last ", " */
while (sbuf_length(whatis_final) < indent)
sbuf_append(whatis_final, " ", 1);
sbuf_append(whatis_final, " - ", 3);
sbuf_append_str(whatis_final, skip_spaces(descr));
sl_add(whatis_lines, strdup(sbuf_content(whatis_final)));
}
/*
* Sorts pages first by inode number, then by name.
*/
static int
pagesort(const void *a, const void *b)
{
const struct page_info *p1 = *(struct page_info * const *) a;
const struct page_info *p2 = *(struct page_info * const *) b;
if (p1->inode == p2->inode)
return strcmp(p1->name, p2->name);
return p1->inode - p2->inode;
}
/*
* Processes a single man section.
*/
static void
process_section(char *section_dir)
{
struct dirent **entries;
int nentries;
struct page_info **pages;
int npages = 0;
int i;
ino_t prev_inode = 0;
if (verbose)
fprintf(stderr, " %s\n", section_dir);
/*
* scan the man section directory for pages
*/
nentries = scandir(section_dir, &entries, NULL, alphasort);
if (nentries < 0) {
warn("%s", section_dir);
exit_code = 1;
return;
}
/*
* collect information about man pages
*/
pages = (struct page_info **) calloc(nentries, sizeof(struct page_info *));
for (i = 0; i < nentries; i++) {
struct page_info *info = new_page_info(section_dir, entries[i]);
if (info != NULL)
pages[npages++] = info;
free(entries[i]);
}
free(entries);
qsort(pages, npages, sizeof(struct page_info *), pagesort);
/*
* process each unique page
*/
for (i = 0; i < npages; i++) {
struct page_info *page = pages[i];
if (page->inode != prev_inode) {
prev_inode = page->inode;
if (verbose)
fprintf(stderr, " reading %s\n", page->filename);
process_page(page, section_dir);
} else if (verbose)
fprintf(stderr, " skipping %s, duplicate\n", page->filename);
free_page_info(page);
}
free(pages);
}
/*
* Returns whether the directory entry is a man page section.
*/
static int
select_sections(const struct dirent *entry)
{
const char *p = &entry->d_name[3];
if (strncmp(entry->d_name, "man", 3) != 0)
return 0;
while (*p != '\0') {
if (!isalnum(*p++))
return 0;
}
return 1;
}
/*
* Processes a single top-level man directory by finding all the
* sub-directories named man* and processing each one in turn.
*/
static void
process_mandir(char *dir_name)
{
struct dirent **entries;
int nsections;
FILE *fp = NULL;
int i;
struct stat st;
if (already_visited(dir_name))
return;
if (verbose)
fprintf(stderr, "man directory %s\n", dir_name);
nsections = scandir(dir_name, &entries, select_sections, alphasort);
if (nsections < 0) {
warn("%s", dir_name);
exit_code = 1;
return;
}
if (common_output == NULL && (fp = open_whatis(dir_name)) == NULL)
return;
for (i = 0; i < nsections; i++) {
char section_dir[MAXPATHLEN];
snprintf(section_dir, sizeof section_dir, "%s/%s", dir_name, entries[i]->d_name);
process_section(section_dir);
snprintf(section_dir, sizeof section_dir, "%s/%s/%s", dir_name,
entries[i]->d_name, machine);
if (stat(section_dir, &st) == 0 && S_ISDIR(st.st_mode))
process_section(section_dir);
if (strcmp(machine_arch, machine) != 0) {
snprintf(section_dir, sizeof section_dir, "%s/%s/%s",
dir_name, entries[i]->d_name, machine_arch);
if (stat(section_dir, &st) == 0 && S_ISDIR(st.st_mode))
process_section(section_dir);
}
free(entries[i]);
}
free(entries);
if (common_output == NULL)
finish_whatis(fp, dir_name);
}
/*
* Processes one argument, which may be a colon-separated list of
* directories.
*/
static void
process_argument(const char *arg)
{
char *dir;
char *mandir;
char *parg;
parg = strdup(arg);
if (parg == NULL)
err(1, "out of memory");
while ((dir = strsep(&parg, ":")) != NULL) {
if (locale != NULL) {
asprintf(&mandir, "%s/%s", dir, locale);
process_mandir(mandir);
free(mandir);
if (lang_locale != NULL) {
asprintf(&mandir, "%s/%s", dir, lang_locale);
process_mandir(mandir);
free(mandir);
}
} else {
process_mandir(dir);
}
}
free(parg);
}
int
main(int argc, char **argv)
{
int opt;
FILE *fp = NULL;
while ((opt = getopt(argc, argv, "ai:n:o:vL")) != -1) {
switch (opt) {
case 'a':
append++;
break;
case 'i':
indent = atoi(optarg);
break;
case 'n':
whatis_name = optarg;
break;
case 'o':
common_output = optarg;
break;
case 'v':
verbose++;
break;
case 'L':
locale = getenv("LC_ALL");
if (locale == NULL)
locale = getenv("LC_CTYPE");
if (locale == NULL)
locale = getenv("LANG");
if (locale != NULL) {
char *sep = strchr(locale, '_');
if (sep != NULL && isupper(sep[1]) &&
isupper(sep[2])) {
asprintf(&lang_locale, "%.*s%s", (int)(ptrdiff_t)(sep - locale), locale, &sep[3]);
}
}
break;
default:
fprintf(stderr, "usage: %s [-a] [-i indent] [-n name] [-o output_file] [-v] [-L] [directories...]\n", argv[0]);
exit(1);
}
}
signal(SIGINT, trap_signal);
signal(SIGHUP, trap_signal);
signal(SIGQUIT, trap_signal);
signal(SIGTERM, trap_signal);
SLIST_INIT(&visited_dirs);
whatis_proto = new_sbuf();
whatis_final = new_sbuf();
if ((machine = getenv("MACHINE")) == NULL) {
static struct utsname utsname;
if (uname(&utsname) == -1)
err(1, "uname");
machine = utsname.machine;
}
if ((machine_arch = getenv("MACHINE_ARCH")) == NULL)
machine_arch = MACHINE_ARCH;
if (common_output != NULL && (fp = open_output(common_output)) == NULL)
err(1, "%s", common_output);
if (optind == argc) {
const char *manpath = getenv("MANPATH");
if (manpath == NULL)
manpath = DEFAULT_MANPATH;
process_argument(manpath);
} else {
while (optind < argc)
process_argument(argv[optind++]);
}
if (common_output != NULL)
finish_output(fp, common_output);
exit(exit_code);
}