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| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | Makefile | 26 | ||||
| -rw-r--r-- | config.h | 11 | ||||
| -rw-r--r-- | rf.1 | 55 | ||||
| -rw-r--r-- | rf.c | 261 |
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diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..529ad04 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +/rf +*.o diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..f288702 --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + 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. 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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: + + <program> Copyright (C) <year> <name of author> + 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 new file mode 100644 index 0000000..f92f5a3 --- /dev/null +++ b/Makefile @@ -0,0 +1,26 @@ +BIN = rf +OBJS = rf.o +MANPAGE = rf.1 +CC ?= gcc +DEPS = config.h +LIBS = +INC = +CFLAGS := ${CFLAGS} +CFLAGS += -Wall -O2 -fstack-protector-strong -D_FORTIFY_SOURCE=2 $(INC) $(LIBS) +PREFIX ?= /usr/local + +build: $(BIN) + +$(BIN): $(OBJS) + $(CC) $(BIN).c $(CFLAGS) -o $(BIN) + +%.o : %.c $(DEPS) + $(CC) -c -o $@ $< $(CFLAGS) + +install: build + install $(BIN) $(DESTDIR)$(PREFIX)/bin/ + install -TD $(MANPAGE) $(DESTDIR)$(PREFIX)/man/man1/$(MANPAGE) + gzip $(PREFIX)/man/man1/$(MANPAGE) + +clean: + rm -vf $(BIN) *.o diff --git a/config.h b/config.h new file mode 100644 index 0000000..c82ed76 --- /dev/null +++ b/config.h @@ -0,0 +1,11 @@ +char *ignored_dirs[] = {"node_modules", ".mypy_cache", ".git", ".hg", + "__pycache__"}; + +size_t ignored_dirs_size = sizeof(ignored_dirs) / sizeof(ignored_dirs[0]); + +char *ignored_extensions[] = {".pyc", ".jpg", ".jpeg", ".png", ".gif", + ".zip", ".tar", ".xz", ".gz", ".gzip", + ".jar", ".apk", ".deb"}; + +size_t ignored_extensions_size = + sizeof(ignored_extensions) / sizeof(ignored_extensions[0]); diff --git a/rf.1 b/rf.1 new file mode 100644 index 0000000..1e8e08d --- /dev/null +++ b/rf.1 @@ -0,0 +1,55 @@ +.TH rf 1 + +.SH NAME +rf \- A tiny and simple file finder + +.SH SYNOPSIS +.B rf +[OPTIONS] PATTERNS... + +.SH DESCRIPTION +.B rf +will find files based on simple substring patterns. + +.SH OPTIONS +.TP +.B "\-h, \-\-help" +.br +Show help message. + +.TP +.B "\-v, \-\-version" +.br +Show version. + +.TP +.B "\-b, \-\-basename" +.br +Only show the basename of results. + +.SH PATTERNS +Files and directories can be found using very simple patterns. + +.TP +.B "Substrings" +.br +A simple string is basically a substring match. So if you supply a +pattern of 'js', rf will match any file that contains the string 'js' +anywhere in the filename. If the pattern is '.js' it will match any +\'.js' or even '.json' files for example, as well as the filename +\'script.js.backup', in other words the character '.' is just that, it +doesn't have any special significance such as in regular expressions. +It also doesn't have any kind of implicit positional information, it +will just match at any point in the filename. + +.TP +.B "Beginning and end" +.br + +.SH SEE ALSO +.BR find (1), +.BR rg (1) + + +.SH COPYRIGHT +Copyright \(co 2019 Rory Bradford <roryrjb@gmail.com>. diff --git a/rf.c b/rf.c new file mode 100644 index 0000000..b1f33d7 --- /dev/null +++ b/rf.c @@ -0,0 +1,261 @@ +#include <dirent.h> +#include <errno.h> +#include <getopt.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include "config.h" + +#define NAME "rf" +#define VERSION "0.0.1" + +struct switches { + int basename; +}; + +int version(char *error) { + fprintf(stderr, "%s version %s\n", NAME, VERSION); + return error == NULL ? 0 : 1; +} + +int usage(char *error) { + if (error != NULL) { + fprintf(stderr, "Error: %s\n\n", error); + } + + fprintf(stderr, "Usage: %s [OPTIONS]\n", NAME); + fprintf(stderr, "\nOptions:\n"); + fprintf(stderr, " --basename, -b only show basename in results\n"); + fprintf(stderr, " --help, -h show help\n"); + fprintf(stderr, " --version show version\n"); + fprintf(stderr, "\n"); + + return version(error); +} + +int is_child(char *dirname) { + if (strcmp("..", dirname) == 0 || strcmp(".", dirname) == 0) { + return 0; + } + + return 1; +} + +int not_in_array(char **arr, char *dirname, size_t size) { + for (int i = 0; i < size; i++) { + if (strstr(dirname, arr[i])) { + return 0; + } + } + + return 1; +} + +int at_side(int beginning, char *filename, char *str) { + int matched = 1; + + if (beginning) { + for (int c = 0; c < strlen(str); c++) { + if (str[c] != filename[c]) { + matched = 0; + break; + } + } + } else { + for (int c = strlen(str), d = strlen(filename); c >= 0; c--, d--) { + if (str[c] != filename[d]) { + matched = 0; + break; + } + } + } + + return matched; +} + +int excluded_extension(char *filename) { + for (int i = 0; i < ignored_extensions_size; i++) { + int res = at_side(0, filename, ignored_extensions[i]); + + if (res) { + return res; + } + } + + return 0; +} + +void print_result(char *path, struct switches *switches, struct dirent *entry) { + if (switches->basename) { + printf("%s\n", entry->d_name); + } else { + char full_path[PATH_MAX]; + full_path[0] = '\0'; + strcat(full_path, path); + strcat(full_path, "/"); + strcat(full_path, entry->d_name); + printf("%s\n", full_path); + } +} + +char *strslice(char *source, int start, int end) { + int diff = start + end; + int len = strlen(source) - diff; + char *output = malloc(sizeof(char *) * len); + memset(output, '\0', len); + + for (int i = 0; i < len; i++) { + output[i] = source[i + start]; + } + + return output; +} + +void recurse_find(char **patterns, int *pattern_count, char *dirname, + struct switches *switches) { + char path[PATH_MAX] = {'\0'}; + strcat(path, dirname); + + DIR *dir = opendir(path); + + if (dir != NULL && not_in_array(ignored_dirs, dirname, ignored_dirs_size)) { + struct dirent *entry; + + while ((entry = readdir(dir)) != NULL) { + int matched = 0; + char *parsed = NULL; + + switch (entry->d_type) { + case DT_DIR: + if (is_child(entry->d_name) && + not_in_array(ignored_dirs, entry->d_name, ignored_dirs_size)) { + char child_path[PATH_MAX] = {'\0'}; + strcat(child_path, path); + strcat(child_path, "/"); + strcat(child_path, entry->d_name); + recurse_find(patterns, pattern_count, child_path, switches); + } + + break; + case DT_REG: + if (excluded_extension(entry->d_name)) { + break; + } + + for (int p = 0; p < *pattern_count; p++) { + char *pattern = patterns[p]; + char first = pattern[0]; + char last = pattern[strlen(pattern) - 1]; + + if (last == '$' && first == '^') { + // show everything + if (strlen(pattern) == 2) { + matched = 1; + } else { + // match whole string + parsed = strslice(pattern, 1, 1); + + if (strcmp(entry->d_name, parsed) == 0) { + matched = 1; + } + } + } else if (last == '$') { + // match at end + parsed = strslice(pattern, 0, 1); + + if (at_side(0, entry->d_name, parsed)) { + matched = 1; + } + } else if (first == '^') { + // match at beginning + parsed = strslice(pattern, 1, 0); + + if (at_side(1, entry->d_name, parsed)) { + matched = 1; + } + } else { + // substring match + if (strstr(entry->d_name, pattern) != NULL) { + matched = 1; + } + } + } + + break; + default: + break; + } + + if (matched) { + print_result(path, switches, entry); + } + + free(parsed); + } + + closedir(dir); + } +} + +int main(int argc, char **argv) { + static struct option options[] = {{"basename", no_argument, 0, 0}, + {"version", no_argument, 0, 0}, + {"help", no_argument, 0, 0}, + {0, 0, 0, 0}}; + + int basename = 0; + + int index = 0; + int res; + + while ((res = getopt_long(argc, argv, "hvb", options, &index)) > -1) { + switch (res) { + case 0: + if (strcmp("version", options[index].name) == 0) { + return version(NULL); + } else if (strcmp("help", options[index].name) == 0) { + return usage(NULL); + } else if (strcmp("basename", options[index].name) == 0) { + basename = 1; + } + + break; + + case 'v': + return version(NULL); + + case 'h': + return usage(NULL); + + case 'b': + basename = 1; + break; + } + } + + if (optind < argc) { + while (optind < argc) { + optind++; + } + + int pattern_count = optind - 1; + + char **patterns = malloc(sizeof(char *) * optind); + memset(patterns, '\0', optind); + + for (int i = 0; i < optind; i++) { + patterns[i] = argv[i + 1]; + } + + struct switches switches = {.basename = basename}; + + recurse_find(patterns, &pattern_count, ".", &switches); + free(patterns); + } + + return 0; +} |