add docs programs

bin/docs-list.c

@@ -0,0 +1,165 @@
+#!/usr/bin/tcc -run
+#include <ctype.h>
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+void print_man_dir(FILE *menu, const char *dir) {
+    DIR *d = opendir(dir);
+    if (!d) {
+        return;
+    }
+
+    struct dirent *ent;
+    while ((ent = readdir(d))) {
+        if (ent->d_name[0] == '.') {
+            continue;
+        }
+
+        char file[512];
+        snprintf(file, sizeof(file), "%s", ent->d_name);
+
+        const char *suffixes[] = {".gz", ".bz2", ".xz", ".lzma", ".zst"};
+        for (size_t i = 0; i < sizeof(suffixes) / sizeof(suffixes[0]); i++) {
+            size_t flen = strlen(file);
+            size_t slen = strlen(suffixes[i]);
+            if (flen > slen && strcmp(file + flen - slen, suffixes[i]) == 0) {
+                file[flen - slen] = '\0';
+                break;
+            }
+        }
+
+        char *dot = strrchr(file, '.');
+        if (!dot || dot == file || !dot[1]) {
+            continue;
+        }
+
+        *dot++ = '\0';
+        fprintf(menu, "%s (%s)\tman\n", file, dot);
+    }
+
+    closedir(d);
+}
+
+void print_man_pages(FILE *menu, const char *root) {
+    DIR *d = opendir(root);
+    if (!d) {
+        return;
+    }
+
+    struct dirent *ent;
+    char path[4096];
+    while ((ent = readdir(d))) {
+        if (strncmp(ent->d_name, "man", 3) != 0) {
+            continue;
+        }
+
+        snprintf(path, sizeof(path), "%s/%s", root, ent->d_name);
+        print_man_dir(menu, path);
+    }
+
+    closedir(d);
+}
+
+int main(void) {
+    char path[] = "/tmp/docs-list.XXXXXX";
+    int fd = mkstemp(path);
+    if (fd < 0) {
+        perror("mkstemp");
+        return 1;
+    }
+
+    FILE *menu = fdopen(fd, "w");
+    if (!menu) {
+        perror("fdopen");
+        unlink(path);
+        return 1;
+    }
+
+    char line[8192];
+    FILE *manpath = popen("manpath 2>/dev/null", "r");
+    if (manpath && fgets(line, sizeof(line), manpath)) {
+        line[strcspn(line, "\n")] = '\0';
+        for (char *dir = strtok(line, ":"); dir; dir = strtok(NULL, ":")) {
+            print_man_pages(menu, dir);
+        }
+    }
+    if (manpath) {
+        pclose(manpath);
+    }
+
+    FILE *pydoc = popen("python -c 'import pkgutil; [print(m) for m in sorted({m.name for m in pkgutil.iter_modules()})]'", "r");
+    if (pydoc) {
+        while (fgets(line, sizeof(line), pydoc)) {
+            line[strcspn(line, "\n")] = '\0';
+            fprintf(menu, "%s\tpydoc\n", line);
+        }
+        pclose(pydoc);
+    }
+
+    fclose(menu);
+
+    char command[1024];
+    snprintf(command, sizeof(command), "wmenu -i -l 20 < '%s'", path);
+
+    FILE *wmenu = popen(command, "r");
+    if (!wmenu) {
+        perror("wmenu");
+        unlink(path);
+        return 1;
+    }
+
+    if (!fgets(line, sizeof(line), wmenu)) {
+        pclose(wmenu);
+        unlink(path);
+        return 0;
+    }
+
+    int status = pclose(wmenu);
+    unlink(path);
+    if (status != 0) {
+        return WIFEXITED(status) ? WEXITSTATUS(status) : 1;
+    }
+
+    line[strcspn(line, "\n")] = '\0';
+    char *kind = strrchr(line, '\t');
+    if (!kind) {
+        return 0;
+    }
+    *kind++ = '\0';
+
+    if (strcmp(kind, "man") == 0) {
+        char *s = line;
+        char name[256] = {0};
+        char section[64] = {0};
+        size_t i = 0;
+
+        while (*s && !isspace((unsigned char)*s) && *s != '(' && i < sizeof(name) - 1) {
+            name[i++] = *s++;
+        }
+
+        char *open = strchr(s, '(');
+        char *close = open ? strchr(open + 1, ')') : NULL;
+        if (open && close && close > open + 1) {
+            size_t len = close - open - 1;
+            if (len >= sizeof(section)) {
+                len = sizeof(section) - 1;
+            }
+            memcpy(section, open + 1, len);
+        }
+
+        if (name[0] && section[0]) {
+            execlp("foot", "foot", "-e", "man", section, name, NULL);
+        } else if (name[0]) {
+            execlp("foot", "foot", "-e", "man", name, NULL);
+        }
+    } else if (strcmp(kind, "pydoc") == 0 && line[0]) {
+        execlp("foot", "foot", "-e", "python", "-m", "pydoc", line, NULL);
+    }
+
+    perror("foot");
+    return 1;
+}

bin/man-list

@@ -0,0 +1,2 @@
+#!/bin/bash
+man -k . | wmenu -i -l 20 | awk '{print $1}' | xargs -r man

bin/pydoc-list

@@ -0,0 +1,9 @@
+#!/bin/sh
+module="$(
+python - <<'PY' | wmenu -i -l 20
+import pkgutil
+for m in sorted({m.name for m in pkgutil.iter_modules()}):
+    print(m)
+PY
+)"
+[ -n "$module" ] && foot -e python -m pydoc "$module"