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authorRob Landley <rob@landley.net>2019-04-26 18:50:09 -0500
committerRob Landley <rob@landley.net>2019-04-26 18:50:09 -0500
commitfc7e28de64a3a485425034e4cc4aff2b781450cd (patch)
tree6434c711b81704255d965449d6627489777c14a5 /toys/pending
parent663bf3c0c7e9590c183ed00c68964d28cadad8a7 (diff)
downloadtoybox-fc7e28de64a3a485425034e4cc4aff2b781450cd.tar.gz
Read .gz/.xz man pages and check sections in "man man" order.
Diffstat (limited to 'toys/pending')
-rw-r--r--toys/pending/man.c98
1 files changed, 69 insertions, 29 deletions
diff --git a/toys/pending/man.c b/toys/pending/man.c
index 912be8b5..1ccae72f 100644
--- a/toys/pending/man.c
+++ b/toys/pending/man.c
@@ -4,15 +4,26 @@
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/man.html
-USE_MAN(NEWTOY(man, "<1>1", TOYFLAG_USR|TOYFLAG_BIN))
+USE_MAN(NEWTOY(man, "<1>2k:", TOYFLAG_USR|TOYFLAG_BIN))
config MAN
bool "man"
default n
help
- usage: man COMMAND
+ usage: man [-k STRING] | [SECTION] COMMAND
- Read manual for system command.
+ Read manual page for system command.
+
+ -k Search short
+
+ Man pages are divided into 8 sections, each with an info page (man 8 info).
+ 1) executables, 2) syscalls, 3) library functions, 4) /dev files,
+ 5) file formats (ala /etc/hosts), 6) games, 7) miscelanous, 8) sysadmin
+
+ If you don't specify a section it'll show the lowest numbered one,
+ but "man 1 mkdir" and "man 2 mkdir" are different things.
+
+ The shell builtins don't have section 1 man pages, see the "help" command.
*/
#define FOR_man
@@ -20,6 +31,8 @@ config MAN
#include <glob.h>
GLOBALS(
+ char *k;
+
char any, cell, *f, *line;
)
@@ -29,6 +42,7 @@ static void newln()
if (TT.any && TT.cell != 2) putchar('\n'); // gawk alias
TT.any = TT.cell = 0;
}
+
static void put(char *x)
{
while (*x && *x != '\n') TT.any = putchar(*x++);
@@ -59,6 +73,7 @@ static void do_man(FILE *fp)
{
size_t len = 0;
char *line = 0;
+
while (getline(&line, &len, fp) > 0) {
TT.line = line;
s("\\fB", ""), s("\\fI", ""), s("\\fP", ""), s("\\fR", ""); // bash bold,ita
@@ -68,9 +83,11 @@ static void do_man(FILE *fp)
s("\\&", ""), s("\\f(CW", ""); // gawk,rsync fancy
s("\\-", "-"), s("\\(", ""), s("\\^", ""), s("\\e", "\\"); // bash escape
s("\\*(", "#"); // gawk var
+
if (start(".BR")) trim(".BR "), s(" ", ""); // bash boldpunct
if (start(".IP")) newln(), trim(".IP "); // bash list
if (start(".IR")) trim(".IR "), s(" ", ""); // bash itapunct
+
trim(".B "); // bash bold
trim(".BI "); // gawk boldita
trim(".FN "); // bash filename
@@ -84,42 +101,65 @@ static void do_man(FILE *fp)
else if (start(".TP")) newln(), TT.cell = 1; // bash table
else if (start(".") || start("\'")); // bash,git garbage
else if (!*TT.line); // emerge
- else ((TT.cell != 0) && TT.cell++), put(" "), put(TT.line);
+ else {
+ if (TT.cell) TT.cell++;
+ put(" ");
+ put(TT.line);
+ }
}
newln();
free(line);
fclose(fp);
}
-static FILE *bzcat()
+// Try opening all the possible file extensions.
+int tryfile(char *section, char *name)
{
- char cmd[FILENAME_MAX];
- snprintf(cmd, sizeof(cmd), "bzcat %s", TT.f);
- return popen(cmd, "r");
-}
+ char *suf[] = {".gz", ".bz2", ".xz", ""}, *end,
+ *s = xmprintf("/usr/share/man/man%s/%s.%s.bz2", section, name, section);
+ int fd, i, and = 1;
-static char *find(char *path, int suf)
-{
- glob_t g;
- int i;
- size_t len = strlen(*toys.optargs);
- char *name;
- glob(path, 0, 0, &g);
- for (i = 0; !TT.f && i < g.gl_pathc; i++) {
- name = basename(g.gl_pathv[i]);
- if (strlen(name) == len + suf && !strncmp(name, *toys.optargs, len))
- TT.f = strdup(g.gl_pathv[i]);
- }
- globfree(&g);
- return TT.f;
+ end = s+strlen(s);
+ do {
+ for (i = 0; i<ARRAY_LEN(suf); i++) {
+ strcpy(end-4, suf[i]);
+ if ((fd = open(s, O_RDONLY))!= -1) {
+ if (*suf[i]) {
+ int fds[] = {fd, -1};
+
+ sprintf(toybuf, "%czcat"+(2*!i), suf[i][1]);
+ xpopen_both((char *[]){toybuf, s, 0}, fds);
+ fd = fds[1];
+ }
+ goto done;
+ }
+ }
+ end -= strlen(section)+1;
+ } while (and--);
+
+done:
+ free(s);
+ return fd;
}
void man_main(void)
{
- chdir("/usr/share/man");
- if (find("man?/*.?.bz2", 6)) do_man(bzcat()); // curl_strequal
- else if (find("man?/*.bz2", 4)) do_man(bzcat()); // curl_strequal.3
- else if (find("man?/*.?", 2)) do_man(fopen(TT.f, "r")); // curl_strnequal
- else if (find("man?/*", 0)) do_man(fopen(TT.f, "r")); // curl_strnequal.3
- if (TT.f) free(TT.f);
+ char *order = "18325467";
+ int fd;
+
+ if (!toys.optc || FLAG(k)) error_exit("not yet");
+
+ if (toys.optc == 1) {
+ if (strchr(*toys.optargs, '/')) fd = xopen(*toys.optargs, O_RDONLY);
+ else for (order = "18325467"; *order; order++) {
+ *toybuf = *order;
+ if (-1 != (fd = tryfile(toybuf, *toys.optargs))) break;
+ }
+ if (!*order) error_exit("no %s", *toys.optargs);
+
+ // If they specified a section, look for file in that section
+ } else if (-1 == (fd = tryfile(toys.optargs[0], toys.optargs[1])))
+ error_exit("section %s no %s", toys.optargs[0], toys.optargs[1]);
+
+ do_man(fdopen(fd, "r"));
}