cex

C/Curses file EXplorer
git clone git://git.wimdupont.com/cex.git
Log | Files | Refs | README | LICENSE

commit 6d041ddbab6507b22127e4342acd93d9b6c9e2eb
Author: Wim Dupont <wim@wimdupont.com>
Date:   Sat, 13 Jul 2024 15:19:20 +0200

init

Diffstat:
A.gitignore | 2++
ALICENSE | 675+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
AMakefile | 40++++++++++++++++++++++++++++++++++++++++
AREADME.adoc | 14++++++++++++++
Acex.1 | 23+++++++++++++++++++++++
Acex.c | 1448+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Acex.h | 135+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 2337 insertions(+), 0 deletions(-)

diff --git a/.gitignore b/.gitignore @@ -0,0 +1,2 @@ +*.o +cex diff --git a/LICENSE b/LICENSE @@ -0,0 +1,675 @@ + + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + cex - c/curses file explorer + Copyright (C) 2024 Wim Dupont + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <https://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + cex Copyright (C) 2024 Wim Dupont + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>. diff --git a/Makefile b/Makefile @@ -0,0 +1,40 @@ +CC = gcc + +NAME = cex +VERSION = 0.1 + +PREFIX = /usr/local +MANPREFIX = ${PREFIX}/share/man + +BIN = cex +SRC = cex.c +OBJ = ${SRC:.c=.o} +MAN1 = ${BIN:=.1} + +all: ${BIN} + +LDFLAGS=-lncurses + +.c.o: + $(CC) -g -c $(CFLAGS) $< + +cex: cex.o + ${CC} -g -o $@ ${OBJ} ${LDFLAGS} + +clean: + rm -f ${BIN} ${OBJ} + +install: all + mkdir -p ${DESTDIR}${PREFIX}/bin + cp -f ${BIN} "${DESTDIR}${PREFIX}/bin" + chmod 755 "${DESTDIR}${PREFIX}/bin/${BIN}" + mkdir -p "${DESTDIR}${MANPREFIX}/man1" + sed "s/VERSION/${VERSION}/g" < ${MAN1} > "${DESTDIR}${MANPREFIX}/man1/${MAN1}" + chmod 644 "${DESTDIR}${MANPREFIX}/man1/${MAN1}" + +uninstall: + rm -f \ + "${DESTDIR}${PREFIX}/bin/${BIN}"\ + "${DESTDIR}${MANPREFIX}/man1/${MAN1}" + +.PHONY: all clean install uninstall diff --git a/README.adoc b/README.adoc @@ -0,0 +1,14 @@ += cex +C/Curses file EXplorer + +File Explorer meant to have a simple and small codebase. +The code is still very much a work in progress and still contains bugs. + +Project is inspired by https://github.com/gokcehan/lf[lf]. + +== Installation + +[source,bash] +---- +$ make clean install +---- diff --git a/cex.1 b/cex.1 @@ -0,0 +1,23 @@ +.TH CEX 1 cex-VERSION +.SH NAME +cex \- C/Curses file EXplorer +.SH SYNOPSIS +.B cex +.SH DESCRIPTION +.B cex +is a simple file explorer with vim-like keybindings as default. +.SH ENVIRONMENT VARIABLES +.B EDITOR +the editor to be used for opening text files. +.SH OPTIONS +.TP +.BI \-f " filename" +defines the file to write current path on exit. Add following to your ~/.bashrc to automatically change directory upon exit: + +.nf + function cex() { + txt=$(mktemp) || exit 1 + command cex -f "$txt" && cd $(cat "$txt") + rm "$txt" + } +.fi diff --git a/cex.c b/cex.c @@ -0,0 +1,1448 @@ +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/wait.h> +#include <ctype.h> +#include <unistd.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <libgen.h> +#include <string.h> +#include <time.h> +#include <langinfo.h> +#include <pwd.h> +#include <grp.h> +#include <dirent.h> +#include <errno.h> +#include <sys/param.h> +#include <curses.h> + +#include "cex.h" + +static DirWin curwin, parwin, childwin; +static struct passwd *userinfo; +static char *editor; +static int maxy, maxx; +static bool hide = DEFAULT_HIDE; +static bool print_bot = TRUE; +static char **selected; +static size_t selc; +static char searchq[SEARCHLEN]; +static size_t searchc; + +int +main(int argc, char **argv) +{ + int opt; + bool writepath = FALSE; + char filename[PATH_MAX]; + + while ((opt = getopt(argc, argv, "f:")) != -1) { + switch (opt) { + case 'f': + strcpy(filename, optarg); + writepath = TRUE; + break; + default: + fatal("Unknown option: %c\n", optopt); + break; + } + } + + userinfo = getpwuid(getuid()); + editor = getenv("EDITOR"); + + init_dirwins(); + init_screen(); + + start(); + + if (writepath) + wpath(filename); + + clean(); +} + +static void +init_dirwins() +{ + curwin.wintype = CURRENT; + parwin.wintype = PARENT; + childwin.wintype = CHILD; + + reset_flags(); + + childwin.highlight = 0; + + if (getcwd(curwin.path, PATH_MAX) == NULL) + fatal("getcwd() error"); + + get_dirname(parwin.path, curwin.path); + + set_win_files(&curwin); + set_win_files(&parwin); + + if (curwin.winfiles != NULL && curwin.winfiles[0].d_type == DT_DIR) { + strcpy(childwin.path, curwin.path); + update_child_win(); + } +} + +static void +init_screen() +{ + FILE *scrfile; + + initscr(); + noecho(); + start_color(); + use_default_colors(); + keypad(stdscr, TRUE); + curs_set(0); + + clear(); + cbreak(); + + init_pair(COLOR_BLACK, COLOR_BLACK, -1); + init_pair(COLOR_RED, COLOR_RED, -1); + init_pair(COLOR_GREEN,COLOR_GREEN, -1); + init_pair(COLOR_YELLOW, COLOR_YELLOW,-1); + init_pair(COLOR_BLUE, COLOR_BLUE,-1); + init_pair(COLOR_MAGENTA,COLOR_MAGENTA, -1); + init_pair(COLOR_CYAN, COLOR_CYAN,-1); + init_pair(COLOR_WHITE,COLOR_WHITE, -1); + + curwin.highlight = 0; + curwin.startpr = 0; + + parwin.highlight = 0; + parwin.startpr = 0; + + childwin.highlight = 0; + childwin.startpr = 0; + + resize(); + + print_top_title(); + print_bot_title(); + + print_win(&parwin); + print_win(&curwin); + print_win(&childwin); +} + +static void +resize() +{ + int startx; + + getmaxyx(stdscr, maxy, maxx); + + parwin.maxy = maxy-BORDER_SPACE_SIZE; + parwin.maxx = maxx/4-BORDER_SPACE_SIZE > 0 ? maxx/4-BORDER_SPACE_SIZE : 1; + startx = maxx > BORDER_SPACE_SIZE ? BORDER_SPACE_SIZE : 0; + parwin.window = newwin(parwin.maxy, parwin.maxx, BORDER_SPACE_SIZE, startx); + + curwin.maxy = maxy-BORDER_SPACE_SIZE; + curwin.maxx = maxx/4-BORDER_SPACE_SIZE > 0 ? maxx/4-BORDER_SPACE_SIZE : 1; + startx = maxx > curwin.maxx+BORDER_SPACE_SIZE*2 ? curwin.maxx+BORDER_SPACE_SIZE*2 : 0; + curwin.window = newwin(curwin.maxy, curwin.maxx, BORDER_SPACE_SIZE, startx); + + childwin.maxy = maxy-BORDER_SPACE_SIZE; + childwin.maxx = maxx/2-BORDER_SPACE_SIZE > 0 ? maxx/2-BORDER_SPACE_SIZE : 1; + startx = maxx > childwin.maxx+BORDER_SPACE_SIZE*2 ? childwin.maxx+BORDER_SPACE_SIZE*2 : 0; + childwin.window = newwin(childwin.maxy, childwin.maxx, BORDER_SPACE_SIZE, startx); + + clear(); + refresh(); + + update_child_win(); +} + +static void +start() +{ + int c; + char chdname[PATH_MAX]; + + while ((c = getch()) != KEY_QUIT) { + move(1, 1); + clrtoeol(); + reset_flags(); + switch (c) { + case KEY_UP: + case KEY_VUP: + move_up(&curwin); + update_child_win(); + break; + case KEY_DOWN: + case KEY_VDOWN: + move_down(&curwin); + update_child_win(); + break; + case KEY_VPUP: + if (is_dir(&parwin, parwin.highlight-1)) + change_parent_dir(UP); + break; + case KEY_VPDOWN: + if (is_dir(&parwin, parwin.highlight+1)) + change_parent_dir(DOWN); + break; + case KEY_PPAGE: + case ctrl('u'): + move_page_up(&curwin); + update_child_win(); + break; + case KEY_NPAGE: + case ctrl('d'): + move_page_down(&curwin); + update_child_win(); + break; + case KEY_BOT: + move_bot(&curwin); + update_child_win(); + break; + case 10: + case KEY_VRIGHT: + case KEY_VRIGHT_ABS: + if (is_dir(&curwin, curwin.highlight)) + change_dir(get_fullpath(chdname, &curwin, curwin.highlight), + RIGHT, c == KEY_VRIGHT_ABS); + else + open_child(); + break; + case KEY_LEFT: + case KEY_VLEFT: + change_dir(get_dirname(chdname, curwin.path), LEFT, FALSE); + break; + case KEY_SEARCH: + search(); + update_child_win(); + break; + case KEY_NEXT_SEARCH: + next_search(); + update_child_win(); + break; + case KEY_PREV_SEARCH: + prev_search(); + update_child_win(); + break; + case KEY_SEL_FILE: + select_file(get_fullpath(chdname, &curwin, curwin.highlight)); + set_win_files(&curwin); + update_child_win(); + break; + case KEY_CLEAR_SEL: + clear_selected(); + set_win_files(&curwin); + set_win_files(&parwin); + update_child_win(); + break; + case KEY_CLEAR_SEARCH: + clear_search(); + set_win_files(&curwin); + break; + case KEY_CP_SEL: + exe_selection(COPY, NULL); + break; + case KEY_RM_SEL: + exe_selection(REMOVE, "Remove"); + break; + case KEY_MV_SEL: + exe_selection(MOVE, "Move"); + break; + case KEY_RM_FILE: + rm_file(curwin.winfiles[curwin.highlight].d_name); + set_win_files(&curwin); + update_child_win(); + break; + case KEY_RENAME_FILE: + rename_file(curwin.winfiles[curwin.highlight].d_name); + set_win_files(&curwin); + update_child_win(); + break; + case KEY_HIDE: + hide = hide ? FALSE : TRUE; + curwin.highlight = 0; + curwin.startpr = 0; + set_win_files(&curwin); + set_win_files(&parwin); + update_child_win(); + break; + case KEY_COMBO_GO: + case KEY_COMBO_INF: + case KEY_COMBO_OPEN: + case KEY_COMBO_MAKE: + combo_key(c); + break; + case KEY_RESIZE: + resize(); + break; + default: + break; + } + + print_top_title(); + if (print_bot) + print_bot_title(); + print_win(&parwin); + print_win(&curwin); + print_win(&childwin); + } +} + +static void +wpath(char *filename) +{ + FILE *fptr; + + if ((fptr = fopen(filename, "w")) == NULL) + fatal("Error opening file '%s'\n", filename); + fprintf(fptr, "%s\n", curwin.path); + fclose(fptr); +} + +static void +reset_flags() +{ + parwin.usehighlight = FALSE; + curwin.usehighlight = TRUE; + childwin.usehighlight = TRUE; + + parwin.holdupdate = FALSE; + curwin.holdupdate = FALSE; + childwin.holdupdate = FALSE; + + print_bot = TRUE; +} + +static void +set_startpr(DirWin *dirwin) +{ + if (dirwin->winfiles == NULL) { + dirwin->startpr = 0; + return; + } + + dirwin->startpr = MAX(dirwin->highlight - dirwin->maxy/2, 0); +} + +static void +set_win_files(DirWin *dirwin) +{ + struct dirent *ent; + size_t count = 0; + DIR *dir; + + free_dirwin(dirwin); + + if (dirwin->wintype == PARENT && strcmp(curwin.path, "/") == 0) + return; + + if ((dir = opendir(dirwin->path)) == NULL) { + switch (errno) { + case EACCES: + set_win_message(dirwin, "No permission."); + return; + default: + fatal("Could not open directory: %s", dirwin->path); + } + } + + if ((dirwin->winfiles = (WinFile*) malloc(sizeof(WinFile))) == NULL) + fatal("Fatal: failed to malloc.\n"); + + while ((ent = readdir(dir)) != NULL) { + if (strcmp(ent->d_name, ".") == 0 + || strcmp(ent->d_name, "..") == 0 + || (hide && ent->d_name[0] == '.')) + continue; + if ((dirwin->winfiles = (WinFile*) realloc(dirwin->winfiles, (count+1)*(sizeof(WinFile)))) == NULL) + fatal("Fatal: failed to realloc.\n"); + strcpy(dirwin->winfiles[count].d_name, ent->d_name); + dirwin->winfiles[count].d_type = ent->d_type; + dirwin->winfiles[count].selected = is_selected(dirwin, count); + (count)++; + } + closedir(dir); + + dirwin->filecount = count; + + if (count == 0) + set_win_message(dirwin, "empty"); + else + qsort(dirwin->winfiles, count, sizeof(WinFile), compare_file); +} + +static bool +is_selected(DirWin *dirwin, size_t index) +{ + char buf[PATH_MAX]; + + if (selc == 0 || selected == NULL) + return FALSE; + + get_fullpath(buf, dirwin, index); + + for (size_t i = 0; i < selc; i++) { + if (strcmp(buf, selected[i]) == 0) + return TRUE; + } + + return FALSE; +} + +static bool +remove_selected(char *sel) +{ + bool res = FALSE; + + if (selc == 0) + return res; + + for (size_t i = 0; i < selc; i++) { + if (strcmp(selected[i], sel) == 0) { + free(selected[i]); + selected[i] = selected[selc-1]; + res = TRUE; + break; + } + } + + if (!res) + return res; + + if (--(selc) == 0) { + free(selected); + selected = NULL; + } else if ((selected = (char**) realloc(selected, selc * sizeof(char *))) == NULL) + fatal("Fatal: failed to realloc.\n"); + + return res; +} + + +static void +set_win_message(DirWin *dirwin, char *message) +{ + free_dirwin(dirwin); + dirwin->message = message; +} + +static void +print_win(DirWin *dirwin) +{ + if (dirwin->holdupdate) + return; + + size_t size = dirwin->maxx; + int y = 0, x = 1; + char name[size+1], sbuf[size+1]; + char *subs; + int sindex; + + wclear(dirwin->window); + + set_startpr(dirwin); + + if (dirwin->message != NULL) { + if (dirwin->wintype == CURRENT) { + wattron(dirwin->window, A_REVERSE); + mvwaddstr(dirwin->window, y, x, dirwin->message); + wattroff(dirwin->window, A_REVERSE); + } else { + wattron(dirwin->window, COLOR_PAIR(COLOR_MAGENTA)); + mvwaddstr(dirwin->window, y, x, dirwin->message); + wattroff(dirwin->window, COLOR_PAIR(COLOR_MAGENTA)); + } + } else if (dirwin->winfiles != NULL) { + while (!dirwin->usehighlight) { + for (size_t i = 0; i < dirwin->filecount; ++i) { + memcpy(name, dirwin->winfiles[i].d_name, size); + name[size] = '\0'; + if (strcmp(basename(curwin.path), dirwin->winfiles[i].d_name) == 0) { + dirwin->usehighlight = TRUE; + dirwin->highlight = i; + set_startpr(dirwin); + break; + } + } + break; + } + for (size_t i = dirwin->startpr; i < dirwin->filecount; ++i) { + if (dirwin->winfiles[i].selected) { + wattron(dirwin->window, COLOR_PAIR(COLOR_GREEN)); + mvwaddch(dirwin->window, y, x-1, '|'); + wattroff(dirwin->window, COLOR_PAIR(COLOR_GREEN)); + } + memcpy(name, dirwin->winfiles[i].d_name, size); + name[size-1] = '\0'; + if (dirwin->usehighlight && dirwin->highlight == i) { + wattron(dirwin->window, A_REVERSE); + mvwaddstr(dirwin->window, y, x, name); + wattroff(dirwin->window, A_REVERSE); + } else if (dirwin->winfiles[i].d_type == DT_DIR) { + wattron(dirwin->window, COLOR_PAIR(COLOR_BLUE)); + wattron(dirwin->window, A_BOLD); + mvwaddstr(dirwin->window, y, x, name); + wattroff(dirwin->window, COLOR_PAIR(COLOR_BLUE)); + wattroff(dirwin->window, A_BOLD); + } else if (dirwin->winfiles[i].d_type == DT_LNK) { + wattron(dirwin->window, COLOR_PAIR(COLOR_CYAN)); + mvwaddstr(dirwin->window, y, x, name); + wattroff(dirwin->window, COLOR_PAIR(COLOR_CYAN)); + } else + mvwaddstr(dirwin->window, y, x, name); + if (dirwin->wintype == CURRENT && searchc > 0 + && ((subs = strstr(name, searchq)) != NULL)) { + sindex = (int) (subs - name); + wattron(dirwin->window, COLOR_PAIR(COLOR_RED)); + if (dirwin->usehighlight && dirwin->highlight == i) + wattron(dirwin->window, A_REVERSE); + memcpy(sbuf, name + sindex, strlen(searchq)); + sbuf[strlen(searchq)] = '\0'; + mvwaddstr(dirwin->window, y, x+sindex, sbuf); + wattroff(dirwin->window, COLOR_PAIR(COLOR_RED)); + if (dirwin->usehighlight && dirwin->highlight == i) + wattroff(dirwin->window, A_REVERSE); + } + y++; + } + } + wrefresh(dirwin->window); +} + +static void +update_child_win() +{ + if (curwin.filecount <= 0) { + free_dirwin(&childwin); + return; + } + + get_fullpath(childwin.path, &curwin, curwin.highlight); + + switch (curwin.winfiles[curwin.highlight].d_type) { + case DT_LNK: + if (is_dir(&curwin, curwin.highlight)) + goto dir; + else + goto reg; + case DT_DIR: + dir: + set_win_files(&childwin); + break; + case DT_REG: + reg: + print_content(); + break; + default: + free_dirwin(&childwin); + break; + } +} + +static void +print_top_title() +{ + move(0, 0); + clrtoeol(); + attron(COLOR_PAIR(COLOR_YELLOW)); + printw("%s:%s/%s", userinfo->pw_name, curwin.path, curwin.winfiles[curwin.highlight].d_name); + attroff(COLOR_PAIR(COLOR_YELLOW)); +} + +static void +print_bot_title() +{ + struct stat statbuf; + struct passwd *usr; + struct tm *tm; + struct group *grp; + char pathbuf[PATH_MAX]; + char mods[11]; + char datestr[256]; + char modfill = '-'; + char fileinf[maxx]; + + get_fullpath(pathbuf, &curwin, curwin.highlight); + memcpy(fileinf, get_file_info(fileinf, pathbuf), maxx); + fileinf[strlen(fileinf)] = '\0'; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_BLUE)); + printw("(%d/%d) ", curwin.filecount == 0 ? 0 : curwin.highlight+1, curwin.filecount); + attroff(COLOR_PAIR(COLOR_BLUE)); + + attron(COLOR_PAIR(COLOR_RED)); + addstr(fileinf); + attroff(COLOR_PAIR(COLOR_RED)); +} + +static char * +get_file_info(char *buf, char *filepath) +{ + struct stat statbuf; + struct passwd *usr; + struct tm *tm; + struct group *grp; + char mods[11]; + char datestr[256]; + char modfill = '-'; + + if ((stat(filepath, &statbuf)) != 0) { + switch (errno) { + case EACCES: + buf = "No permission."; + break; + default: + buf = "Retrieving filestats failed."; + break; + } + return buf; + } + + if ((usr = getpwuid(statbuf.st_uid)) == NULL) { + buf = "Retrieving username failed."; + return buf; + } + if ((grp = getgrgid(statbuf.st_gid)) == NULL) { + buf = "Retrieving groupname failed."; + return buf; + } + + mods[0] = S_ISDIR(statbuf.st_mode) ? 'd' : modfill; + mods[1] = statbuf.st_mode & S_IRUSR ? 'r' : modfill; + mods[2] = statbuf.st_mode & S_IWUSR ? 'w' : modfill; + mods[3] = statbuf.st_mode & S_IXUSR ? 'x' : modfill; + mods[4] = statbuf.st_mode & S_IRGRP ? 'r' : modfill; + mods[5] = statbuf.st_mode & S_IWGRP ? 'w' : modfill; + mods[6] = statbuf.st_mode & S_IXGRP ? 'x' : modfill; + mods[7] = statbuf.st_mode & S_IROTH ? 'r' : modfill; + mods[8] = statbuf.st_mode & S_IWOTH ? 'w' : modfill; + mods[9] = statbuf.st_mode & S_IXOTH ? 'x' : modfill; + mods[10] = '\0'; + + tm = localtime(&statbuf.st_mtime); + strftime(datestr, sizeof(datestr), nl_langinfo(D_T_FMT), tm); + + sprintf(buf, "%10.10s %s %s %9jd %s", + mods, + usr->pw_name, + grp->gr_name, + (intmax_t)statbuf.st_size, + datestr); + + return buf; +} + +static void +print_content() +{ + char buf[PATH_MAX]; + char cmd[300]; + FILE * fp = NULL; + size_t size = childwin.maxx; + char str[size + 1]; + int y = 0, x = 0; + + werase(childwin.window); + + free_dirwin(&childwin); + + if ((fp = fopen(get_fullpath(buf, &curwin, curwin.highlight), "r")) == NULL) { + switch (errno) { + case EACCES: + set_win_message(&childwin, "No permission."); + return; + default: + fatal("Error opening file '%s'\n", buf); + } + } + + childwin.holdupdate = TRUE; + + while (fgets(str, size, fp) != NULL && y <= childwin.maxy) { + mvwaddstr(childwin.window, y, x, str); + y++; + } + + fclose(fp); + + wrefresh(childwin.window); +} + +static void +show_file_mime() +{ + char buf[MIME_MAX]; + + if (get_mime(buf, MIME_MAX, curwin.winfiles[curwin.highlight].d_name) != 0) + return; + + move(1, 1); + clrtoeol(); + mvprintw(1, 1, "%s", buf); +} + +static void +combo_key(int keypress) +{ + int c; + + move(maxy-1, maxx-1); + clrtoeol(); + mvaddch(maxy-1, maxx-1, keypress); + + halfdelay(10); + + while ((c = getch()) != ERR) { + switch (keypress) { + case KEY_COMBO_GO: + combo_go(c); + break; + case KEY_COMBO_INF: + combo_inf(c); + break; + case KEY_COMBO_OPEN: + combo_open(c); + break; + case KEY_COMBO_MAKE: + combo_make(c); + break; + default: + break; + } + break; + } + + cbreak(); + move(maxy-1, maxx-1); + clrtoeol(); +} + +static void +combo_go(int key) +{ + switch (key) { + case KEY_COMBO_GO_TOP: + move_top(&curwin); + update_child_win(); + break; + case KEY_COMBO_GO_HOME: + change_dir(userinfo->pw_dir, HOME, FALSE); + break; + default: + break; + } +} + +static void +combo_inf(int key) +{ + switch (key) { + case KEY_COMBO_INF_OPEN: + show_file_mime(); + break; + default: + break; + } +} + +static void +combo_open(int key) +{ + char chdname[PATH_MAX]; + + switch (key) { + case KEY_COMBO_OPEN_NOHUP_XDG: + if (is_dir(&curwin, curwin.highlight)) + change_dir(get_fullpath(chdname, &curwin, curwin.highlight), RIGHT, FALSE); + else + open_nohup_xdg(); + break; + default: + break; + } +} + +static void +combo_make(int key) +{ + char chdname[PATH_MAX]; + + switch (key) { + case KEY_COMBO_MAKE_FILE: + make_file(curwin.path); + set_win_files(&curwin); + update_child_win(); + break; + case KEY_COMBO_MAKE_DIR: + make_dir(curwin.path); + set_win_files(&curwin); + update_child_win(); + break; + case KEY_COMBO_MAKE_MOD: + make_mod(); + break; + case KEY_COMBO_MAKE_ACCESS: + make_access(); + break; + default: + break; + } +} + +static void +change_dir(char *chdname, Direction direction, bool abspath) +{ + char tmpdir[PATH_MAX]; + + if (chdir(chdname) != 0) + return; + + if (!abspath) + strcpy(curwin.path, chdname); + else if (getcwd(curwin.path, PATH_MAX) == NULL) + fatal("getcwd() error"); + + switch (direction) { + case RIGHT: + curwin.highlight = 0; + break; + case LEFT: + curwin.highlight = parwin.highlight; + break; + case HOME: + curwin.highlight = 0; + break; + default: + break; + + } + + set_win_files(&curwin); + + get_dirname(parwin.path, curwin.path); + set_win_files(&parwin); + + update_child_win(); +} + +static void +change_parent_dir(Direction direction) +{ + char pp[PATH_MAX]; + + switch (direction) { + case UP: + move_up(&parwin); + break; + case DOWN: + move_down(&parwin); + break; + default: + return; + } + + parwin.usehighlight = TRUE; + + curwin.highlight = 0; + + change_dir(get_fullpath(pp, &parwin, parwin.highlight), direction, FALSE); +} + +static void +open_child() +{ + char mime[MIME_MAX]; + char mimedefault[MIME_APP_MAX]; + sigset_t set; + bool istext; + char pathbuf[PATH_MAX]; + + if (curwin.message != NULL) + return; + + if (get_mime(mime, MIME_MAX, curwin.winfiles[curwin.highlight].d_name) != 0) { + move(1, 1); + clrtoeol(); + mvprintw(1, 1, "Can't open %s", curwin.winfiles[curwin.highlight].d_name); + return; + } + + istext = strncmp(mime, "text/", 5) == 0; + + if (!istext && get_mime_default(mimedefault, MIME_APP_MAX, mime) != 0) { + move(1, 1); + clrtoeol(); + mvprintw(1, 1, "Can't open for mime %s", mime); + return; + } + + endwin(); + + if (sigemptyset (&set) == -1) + fatal("Sigemptyset failed."); + if (sigaddset(&set, SIGWINCH) == -1) + fatal("Sigaddset failed."); + if (sigprocmask(SIG_BLOCK, &set, NULL) != 0) + fatal("Blocking sigprocmask failed."); + + run_command(PATH_MAX + 12, "%s '%s'", istext ? editor : "xdg-open", + get_fullpath(pathbuf, &curwin, curwin.highlight)); + + if (sigprocmask(SIG_UNBLOCK, &set, NULL) != 0) + fatal("Unblocking sigprocmask failed."); + + clear(); + noecho(); + cbreak(); + + refresh(); + wrefresh(parwin.window); + wrefresh(curwin.window); + wrefresh(childwin.window); + update_child_win(); +} + +static void +open_nohup_xdg() +{ + char *cmdfmt = "nohup xdg-open '%s' > /dev/null 2>&1 &"; + size_t size = PATH_MAX + strlen(cmdfmt); + + run_command(size, cmdfmt, curwin.winfiles[curwin.highlight].d_name); +} + +static void +search() +{ + int c, y, x; + + clear_search(); + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + addstr("Search name? "); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + + getyx(stdscr, y, x); + + while ((c = mvwgetch(stdscr, y, x)) != 10) { + switch (c) { + case KEY_BACKSPACE: + if (searchc > 0) { + searchq[--(searchc)] = '\0'; + move(y, --x); + clrtoeol(); + } + break; + default: + if (searchc < SEARCHLEN) { + searchq[(searchc)++] = c; + move(y, ++x); + } + break; + } + print_win(&curwin); + } + noecho(); + curs_set(0); +} + +static void +move_top(DirWin *dirwin) +{ + dirwin->highlight = 0; +} + +static void +move_bot(DirWin *dirwin) +{ + dirwin->highlight = dirwin->filecount-1; +} + +static void +move_page_up(DirWin *dirwin) +{ + dirwin->highlight = MAX(dirwin->highlight - dirwin->maxy/2, 0); +} + +static void +move_page_down(DirWin *dirwin) +{ + dirwin->highlight = MIN(dirwin->highlight + dirwin->maxy/2, dirwin->filecount-1); +} + +static void +move_up(DirWin *dirwin) +{ + if (dirwin->highlight > 0) + dirwin->highlight--; +} + +static void +move_down(DirWin *dirwin) +{ + if (dirwin->highlight < dirwin->filecount-1) + dirwin->highlight++; +} + +static void +next_search() +{ + size_t size = curwin.maxx; + + if (searchc == 0) + return; + + for (size_t i = curwin.highlight+1; i < curwin.filecount; i++) { + if ((strstr(curwin.winfiles[i].d_name, searchq) != NULL)) { + curwin.highlight = i; + return; + } + } +} + +static void +prev_search() +{ + size_t size = curwin.maxx; + + if (searchc == 0) + return; + + for (size_t i = curwin.highlight-1; i > 0; i--) { + if ((strstr(curwin.winfiles[i].d_name, searchq) != NULL)) { + curwin.highlight = i; + return; + } + } +} + +static void +free_dirwin(DirWin *dirwin) +{ + free(dirwin->winfiles); + dirwin->filecount = 0; + dirwin->winfiles = NULL; + dirwin->message = NULL; +} + +static void +clean() +{ + wclear(curwin.window); + wclear(parwin.window); + wclear(childwin.window); + + clear(); + + delwin(parwin.window); + delwin(curwin.window); + delwin(childwin.window); + delwin(stdscr); + + free_dirwin(&curwin); + free_dirwin(&parwin); + free_dirwin(&childwin); + + clear_selected(); + + endwin(); +} + +static void +fatal(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + + clean(); + + exit(EXIT_FAILURE); +} + +static bool +is_dir(DirWin *dirwin, size_t index) +{ + struct stat statbuf; + char linkpath[PATH_MAX]; + char abspath[PATH_MAX]; + size_t len; + + if (dirwin->filecount <= 0) + return FALSE; + + if (dirwin->winfiles[index].d_type == DT_DIR) + return TRUE; + + get_fullpath(linkpath, dirwin, index); + + if (dirwin->winfiles[index].d_type == DT_LNK) + return (lstat(realpath(linkpath, abspath), &statbuf) >= 0) && S_ISDIR(statbuf.st_mode); + + return FALSE; +} + +static int +compare_file(const void *a, const void *b) +{ + int typecompare; + const WinFile *ma = a; + const WinFile *mb = b; + + if ((typecompare = ma->d_type - mb->d_type) == 0) + return strcmp(ma->d_name, mb->d_name); + + return typecompare; +} + +static int +get_mime(char *buf, size_t bufsize, char *path) +{ + char *cmdfmt = "xdg-mime query filetype '%s'"; + size_t size = PATH_MAX + strlen(cmdfmt); + char cmd[size]; + + snprintf(cmd, size, cmdfmt, path); + + return read_command(buf, bufsize, cmd); +} + +static int +get_mime_default(char *buf, size_t bufsize, char *mime) +{ + char *cmdfmt = "xdg-mime query default '%s'"; + size_t cmdsize = MIME_MAX + strlen(cmdfmt); + char cmd[cmdsize]; + + snprintf(cmd, cmdsize, cmdfmt, mime); + + return read_command(buf, bufsize, cmd); +} + +static int +read_command(char *buf, size_t bufsize, char *cmd) +{ + FILE *file; + + if ((file = popen(cmd, "r")) == NULL) { + buf = NULL; + return 1; + } + + if (fgets(buf, bufsize, file) == NULL) { + buf = NULL; + pclose(file); + return 2; + } + + buf[strlen(buf)-1] = '\0'; + + pclose(file); + + return 0; +} + +static void +run_command(size_t size, const char *fmt, ...) +{ + va_list ap; + char cmd[size]; + + va_start(ap, fmt); + vsnprintf(cmd, size, fmt, ap); + va_end(ap); + + system(cmd); +} + +static int +make_dir(char *path) +{ + FILE *fptr; + char name[PATH_MAX]; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + addstr("Name of directory? "); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(name, PATH_MAX); + noecho(); + curs_set(0); + + return mkdir(name, 0755); +} + +static int +make_file(char *path) +{ + FILE *fptr; + char name[PATH_MAX]; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + addstr("Name of file? "); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(name, PATH_MAX); + noecho(); + curs_set(0); + + if (strlen(name) > 0) { + if ((fptr = fopen(name, "w")) == NULL) + fatal("Error opening file '%s'\n", name); + fclose(fptr); + } +} + +static int +rm_file(char *fname) +{ + int res = 0; + char response[1]; + char *msg; + char *rmdirfmt = "rm -rf %s"; + size_t size = PATH_MAX + strlen(rmdirfmt); + char cmd[size]; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + printw("Remove %s? (y/N) ", fname); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(response, 1); + noecho(); + curs_set(0); + + if (strcasecmp(response, "y") == 0) { + if (is_dir(&curwin, curwin.highlight)) + run_command(size, rmdirfmt, fname); + else + res = remove(fname); + curwin.highlight = MAX(curwin.highlight-1, 0); + } + + if (res != 0) { + switch (errno) { + case EACCES: + msg = "No permission."; + break; + case EEXIST: + case ENOTEMPTY: + msg = "Directory is not empty."; + break; + default: + msg = "Could not remove file."; + break; + } + move(maxy-1, 0); + clrtoeol(); + addstr(msg); + print_bot = FALSE; + } + + return res; +} + +static int +rename_file(char *fname) +{ + int res = 0; + char name[PATH_MAX]; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + addstr("New name? "); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(name, PATH_MAX); + noecho(); + curs_set(0); + + if (strlen(name) > 0) + return rename(fname, name); + + return res; +} + +static int +make_mod() +{ + int res = 0; + char name[3]; + int mod; + + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + addstr("File mods (numeric)? "); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(name, 3); + noecho(); + curs_set(0); + + if (strlen(name) == 3) { + bool isvalid = TRUE; + for (size_t i = 0; i < 3; i++) { + if (!isdigit(name[i])) + isvalid = FALSE; + } + if (isvalid) + chmod(curwin.winfiles[curwin.highlight].d_name, strtol(name, NULL, 8)); + } + + return res; +} + +static int +make_access() +{ + char *cmdfmt = "ln -s %s %s"; + char pathbuf[PATH_MAX]; + size_t size = PATH_MAX + strlen(cmdfmt); + run_command(size, cmdfmt, get_fullpath(pathbuf, &curwin, curwin.highlight), LN_ACCESS_DIR); +} + +static void +exe_selection(SelAction action, char *askn) +{ + char *cmdfmt; + char dest[PATH_MAX]; + char response[1]; + size_t size = PATH_MAX*2 + 20; + + if (selected == NULL || selc == 0) + return; + + if (askn != NULL) { + move(maxy-1, 0); + clrtoeol(); + + attron(COLOR_PAIR(COLOR_MAGENTA)); + printw("%s selection (%d files) ? (y/N) ", askn, selc); + attroff(COLOR_PAIR(COLOR_MAGENTA)); + + echo(); + curs_set(1); + getnstr(response, 1); + noecho(); + curs_set(0); + + if (!strcasecmp(response, "y") == 0) + return; + } + + switch (action) { + case COPY: + for (size_t i = 0; i <selc; i++) + run_command(size, "cp -rf %s %s", selected[i], curwin.path); + break; + case REMOVE: + for (size_t i = 0; i <selc; i++) + run_command(size, "rm -rf %s", selected[i]); + break; + case MOVE: + for (size_t i = 0; i <selc; i++) + run_command(size, "mv %s %s", selected[i], curwin.path); + break; + default: + break; + } + + clear_selected(); + curwin.highlight = 0; + set_win_files(&curwin); + set_win_files(&parwin); + update_child_win(); +} + +static void +select_file(char *path) +{ + if (selc == 0 && ((selected = (char**) malloc(sizeof(char *)))) == NULL) + fatal("Fatal: failed to malloc selected.\n"); + + if (remove_selected(path)) + return; + + if ((selected = (char**) realloc(selected, (selc+1) * sizeof(char *))) == NULL) + fatal("Fatal: failed to realloc.\n"); + + selected[selc] = strdup(path); + (selc)++; +} + +static void +clear_selected() +{ + for (size_t i = 0; i < selc; i++) + free(selected[i]); + + free(selected); + selected = NULL; + selc = 0; +} + +static void +clear_search() +{ + for (size_t i = 0; i < SEARCHLEN; i++) + searchq[i] = '\0'; + searchc = 0; +} + +static char * +get_fullpath(char *buf, DirWin *dirwin, size_t index) +{ + index = MAX(index, 0); + index = MIN(index, dirwin->filecount-1); + + if (strcmp(dirwin->path, "/") == 0) + snprintf(buf, PATH_MAX, "/%s", dirwin->winfiles[index].d_name); + else + snprintf(buf, PATH_MAX, "%s/%s", dirwin->path, dirwin->winfiles[index].d_name); + + return buf; +} + +static char * +get_dirname(char *buf, char *path) +{ + strcpy(buf, path); + dirname(buf); + return buf; +} diff --git a/cex.h b/cex.h @@ -0,0 +1,135 @@ +#ifndef DISCODL_H +#define DISCODL_H + +#define DEFAULT_HIDE TRUE +#define MIME_MAX 255 +#define MIME_APP_MAX 255 +#define BORDER_SPACE_SIZE 2 +#define SEARCHLEN 20 +#define LN_ACCESS_DIR "$HOME/access" + +#define KEY_QUIT 'q' +#define KEY_VUP 'k' +#define KEY_VDOWN 'j' +#define KEY_VPUP 'K' +#define KEY_VPDOWN 'J' +#define KEY_VLEFT 'h' +#define KEY_VRIGHT 'l' +#define KEY_VRIGHT_ABS 'L' +#define KEY_BOT 'G' +#define KEY_NEXT_SEARCH 'n' +#define KEY_PREV_SEARCH 'N' +#define KEY_HIDE '.' +#define KEY_SEL_FILE ' ' +#define KEY_CLEAR_SEL 'c' +#define KEY_CLEAR_SEARCH 'C' +#define KEY_MAKE_FILE 'f' +#define KEY_RM_FILE 'D' +#define KEY_RENAME_FILE 'r' +#define KEY_CP_SEL 'p' +#define KEY_RM_SEL 'd' +#define KEY_MV_SEL 'M' +#define KEY_SEARCH '/' + +#define KEY_COMBO_GO 'g' +#define KEY_COMBO_GO_TOP 'g' +#define KEY_COMBO_GO_HOME 'h' + +#define KEY_COMBO_INF 'i' +#define KEY_COMBO_INF_OPEN 'o' + +#define KEY_COMBO_OPEN 'o' +#define KEY_COMBO_OPEN_NOHUP_XDG 'o' + +#define KEY_COMBO_MAKE 'm' +#define KEY_COMBO_MAKE_FILE 'f' +#define KEY_COMBO_MAKE_DIR 'd' +#define KEY_COMBO_MAKE_MOD 'm' +#define KEY_COMBO_MAKE_ACCESS 'a' + +#define ctrl(x) ((x) & 0x1f) + +typedef enum {HOME, LEFT, RIGHT, UP, DOWN} Direction; +typedef enum {CURRENT, PARENT, CHILD} WinType; +typedef enum {COPY, REMOVE, MOVE} SelAction; + +typedef struct _win_file { + char d_name[256]; + unsigned char d_type; + bool selected; +} WinFile; + +typedef struct _dir_win { + WinType wintype; + WINDOW *window; + WinFile *winfiles; + char path[PATH_MAX]; + char *message; + int maxx; + int maxy; + int startpr; + int highlight; + size_t filecount; + bool holdupdate; + bool usehighlight; +} DirWin; + +static void init_dirwins(); +static void init_screen(); +static void resize(); +static void start(); +static void wpath(char *filename); +static void reset_flags(); +static void set_startpr(DirWin *dirwin); +static void set_win_files(DirWin *dirwin); +static void set_win_message(DirWin *dirwin, char *message); +static void print_win(DirWin *dirwin); +static void update_child_win(); +static void print_top_title(); +static void print_bot_title(); +static void print_content(); +static void show_file_mime(); +static void select_file(char *path); +static void exe_selection(SelAction action, char *askn); +static void clear_selected(); +static void clear_search(); +static void combo_key(int keypress); +static void combo_go(int keypress); +static void combo_inf(int keypress); +static void combo_open(int keypress); +static void combo_make(int keypress); +static void change_dir(char *chdname, Direction direction, bool abspath); +static void change_parent_dir(Direction direction); +static void open_child(); +static void open_nohup_xdg(); +static void search(); +static void move_top(DirWin *dirwin); +static void move_bot(DirWin *dirwin); +static void move_page_up(DirWin *dirwin); +static void move_page_down(DirWin *dirwin); +static void move_up(DirWin *dirwin); +static void move_down(DirWin *dirwin); +static void next_search(); +static void prev_search(); +static void free_dirwin(DirWin *dirwin); +static void run_command(size_t size, const char *fmt, ...); +static void clean(); +static void fatal(const char *fmt, ...); +static bool is_dir(DirWin *dirwin, size_t index); +static bool is_selected(DirWin *dirwin, size_t count); +static bool remove_selected(char *sel); +static int compare_file(const void *a, const void *b); +static int get_mime(char *buf, size_t bufsize, char *path); +static int get_mime_default(char *buf, size_t bufsize, char *mime); +static int read_command(char *buf, size_t bufsize, char *cmd); +static int make_file(char *path); +static int make_dir(char *path); +static int make_mod(); +static int make_access(); +static int rm_file(char *fname); +static int rename_file(); +static char *get_file_info(char *buf, char *filepath); +static char *get_fullpath(char *buf, DirWin *dirwin, size_t index); +static char *get_dirname(char *buf, char *path); + +#endif