--- /dev/null
+/* vi: set sw=4 ts=4: */
+/*
+ * paste.c - implementation of the posix paste command
+ *
+ * Written by Maxime Coste <mawww@kakoune.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+//config:config PASTE
+//config: bool "paste"
+//config: default y
+//config: help
+//config: paste is used to paste lines of different files together
+//config: and write the result to stdout
+
+//applet:IF_PASTE(APPLET_NOEXEC(paste, paste, BB_DIR_USR_BIN, BB_SUID_DROP, paste))
+
+//kbuild:lib-$(CONFIG_PASTE) += paste.o
+
+//usage:#define paste_trivial_usage
+//usage: "[OPTIONS] [FILE]..."
+//usage:#define paste_full_usage "\n\n"
+//usage: "Paste lines from each input file, seperated with tab\n"
+//usage: "\n -d LIST Use delimiters from LIST, not tab"
+//usage: "\n -s Serial: one file at a time"
+//usage:
+//usage:#define paste_example_usage
+//usage: "# write out directory in four columns\n"
+//usage: "$ ls | paste - - - -\n"
+//usage: "# combine pairs of lines from a file into single lines\n"
+//usage: "$ paste -s -d '\\t\\n' file\n"
+
+#include "libbb.h"
+
+static void paste_files(FILE** files, int file_cnt, char* delims, int del_cnt)
+{
+ char *line;
+ char delim;
+ int del_idx = 0;
+ int active_files = file_cnt;
+ int i;
+
+ while (active_files > 0) {
+ for (i = 0; i < file_cnt; ++i) {
+ if (files[i] == NULL)
+ continue;
+
+ line = xmalloc_fgetline(files[i]);
+ if (!line) {
+ fclose_if_not_stdin(files[i]);
+ files[i] = NULL;
+ --active_files;
+ continue;
+ }
+ fputs(line, stdout);
+ free(line);
+ delim = '\n';
+ if (i != file_cnt - 1) {
+ delim = delims[del_idx++];
+ if (del_idx == del_cnt)
+ del_idx = 0;
+ }
+ if (delim != '\0')
+ fputc(delim, stdout);
+ }
+ }
+}
+
+static void paste_files_separate(FILE** files, char* delims, int del_cnt)
+{
+ char *line, *next_line;
+ char delim;
+ int del_idx = 0;
+ int i;
+
+ for (i = 0; files[i]; ++i) {
+ line = NULL;
+ while ((next_line = xmalloc_fgetline(files[i])) != NULL) {
+ if (line) {
+ fputs(line, stdout);
+ free(line);
+ delim = delims[del_idx++];
+ if (del_idx == del_cnt)
+ del_idx = 0;
+ if (delim != '\0')
+ fputc(delim, stdout);
+ }
+ line = next_line;
+ }
+ if (line) {
+ /* coreutils adds \n even if this is a final line
+ * of the last file and it was not \n-terminated.
+ */
+ printf("%s\n", line);
+ free(line);
+ }
+ fclose_if_not_stdin(files[i]);
+ }
+}
+
+#define PASTE_OPT_DELIMITERS (1 << 0)
+#define PASTE_OPT_SEPARATE (1 << 1)
+
+int paste_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int paste_main(int argc UNUSED_PARAM, char **argv)
+{
+ char *delims = (char*)"\t";
+ int del_cnt = 1;
+ unsigned opt;
+ int i;
+
+ opt = getopt32(argv, "d:s", &delims);
+ argv += optind;
+
+ if (opt & PASTE_OPT_DELIMITERS) {
+ if (!delims[0])
+ bb_error_msg_and_die("-d '' is not supported");
+ /* unknown mappings are not changed: "\z" -> '\\' 'z' */
+ /* trailing backslash, if any, is preserved */
+ del_cnt = strcpy_and_process_escape_sequences(delims, delims) - delims;
+ /* note: handle NUL properly (do not stop at it!): try -d'\t\0\t' */
+ }
+
+ if (!argv[0])
+ (--argv)[0] = (char*) "-";
+ for (i = 0; argv[i]; ++i) {
+ argv[i] = (void*) fopen_or_warn_stdin(argv[i]);
+ if (!argv[i])
+ xfunc_die();
+ }
+
+ if (opt & PASTE_OPT_SEPARATE)
+ paste_files_separate((FILE**)argv, delims, del_cnt);
+ else
+ paste_files((FILE**)argv, i, delims, del_cnt);
+
+ fflush_stdout_and_exit(0);
+}
POSIX Tools not supported:
asa, at, batch, bc, c99, command, compress, csplit, ex, fc, file,
gencat, getconf, iconv, join, link, locale, localedef, lp, m4,
- mailx, newgrp, nl, paste, pathchk, pax, pr, qalter, qdel, qhold, qmove,
+ mailx, newgrp, nl, pathchk, pax, pr, qalter, qdel, qhold, qmove,
qmsg, qrerun, qrls, qselect, qsig, qstat, qsub, tabs, talk, tput,
tsort, unlink, uucp, uustat, uux
-x | no | no |
od Busybox specific options: None
+paste POSIX options
+ option | exists | compliant | remarks
+ -d list | yes | yes |
+ -s | yes | yes |
+paste Busybox specific options: None
+
patch POSIX options
option | exists | compliant | remarks
-D define | no | no |
projects / oweals / busybox.git / commitdiff