rename utils to posix

[pdutils] / utils / comm / comm.c

diff --git a/utils/comm/comm.c b/utils/comm/comm.c
deleted file mode 100644 (file)
index 72aba31..0000000
--- a/utils/comm/comm.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/*
- * comm.c - select or reject lines common to two files
- *
- * Version: 2008-1.01
- * Build:   c89 -o comm comm.c
- * Source:  <http://pdcore.sourceforge.net/>
- * Spec:    <http://www.opengroup.org/onlinepubs/9699919799/utilities/comm.html>
- *
- * This is free and unencumbered software released into the public domain,
- * provided "as is", without warranty of any kind, express or implied. See the
- * file UNLICENSE and the website <http://unlicense.org> for further details.
- */
-
-
-#define _POSIX_SOURCE
-
-#include <errno.h>
-#include <fcntl.h>
-#include <locale.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define USAGE     "usage: comm [-123] file1 file2\n"
-#define ENOMALLOC "Unable to allocate memory for read buffer"
-#define BUFSIZE   4096
-#define LINESIZE  64
-#define SYSERR    1
-#define APPERR    0
-
-typedef struct { int     fd;
-                 char   *fn;
-                 int     eof;
-                 char    buf[BUFSIZE];
-                 size_t  bufpos;
-                 size_t  eobuf;
-                 char   *line;
-                 size_t  linesz;
-               } FINFO;
-
-static void initfile(FINFO *file, char *fn);
-static void cleanup(FINFO *file);
-static void commfiles(FINFO *file1, FINFO *file2);
-static int getline(FINFO *file);
-static void fillbuf(FINFO *file);
-static void fatal(int errtype, char *s);
-
-static int opt1, opt2, opt3;
-
-
-int main(int argc, char **argv)
-{
-    extern int optind, opterr;
-    int c;
-    FINFO file1, file2;
-
-    setlocale(LC_ALL, "");
-    opterr = 0;
-
-    while ((c = getopt(argc, argv, "123")) != -1)
-        switch (c)
-        {
-        case '1':
-            opt1 = 1;
-            break;
-        case '2':
-            opt2 = 1;
-            break;
-        case '3':
-            opt3 = 1;
-            break;
-        default:
-            fprintf(stderr, USAGE);
-            exit(1);
-        }
-
-    argc -= optind;
-    argv += optind;
-
-    if (argc != 2)
-        fatal(APPERR, USAGE);
-
-    initfile(&file1, argv[0]);
-    initfile(&file2, argv[1]);
-
-    commfiles(&file1, &file2);
-
-    cleanup(&file1);
-    cleanup(&file2);
-
-    return(0);
-}
-
-
-void initfile(FINFO *file, char *fn)
-{
-    int fd;
-
-    if (strcmp(fn, "-") == 0)
-        fd = STDIN_FILENO;
-    else
-        if ((fd = open(fn, O_RDONLY)) == -1)
-            fatal(SYSERR, fn);
-
-    file->fd     = fd;
-    file->fn     = fn;
-    file->eof    = 0;
-    file->bufpos = 0;
-    file->eobuf  = 0;
-    file->linesz = LINESIZE;
-
-    if ((file->line = malloc(file->linesz)) == NULL)
-        fatal(APPERR, ENOMALLOC);
-}
-
-
-void cleanup(FINFO *file)
-{
-    free(file->line);
-
-    if (strcmp(file->fn, "-") != 0 && close(file->fd) == -1)
-        fatal(SYSERR, file->fn);
-}
-
-
-void commfiles(FINFO *file1, FINFO *file2)
-{
-    int cmp;
-
-    if (getline(file1) && getline(file2))
-        while(1)
-        {
-            cmp = strcoll(file1->line, file2->line);
-
-            if (cmp == 0)
-            {
-                if (! opt3)
-                    printf("%s%s%s\n", (opt1 ? "" : "\t"), (opt2 ? "" : "\t"), file1->line);
-
-                if ((getline(file1) + getline(file2)) < 2)
-                    break;
-            }
-
-            else if (cmp > 0)
-            {
-                if (! opt2)
-                    printf("%s%s\n", (opt1 ? "" : "\t"), file2->line);
-
-                if (! getline(file2))
-                    break;
-            }
-
-            else   /* cmp < 0 */
-            {
-                if (! opt1)
-                    printf("%s\n", file1->line);
-
-                if (! getline(file1))
-                    break;
-            }
-        }
-
-    while(! file1->eof && ! opt1)
-    {
-        printf("%s\n", file1->line);
-        getline(file1);
-    }
-
-    while(! file2->eof && ! opt2)
-    {
-        printf("%s%s\n", (opt1 ? "" : "\t"), file2->line);
-        getline(file2);
-    }
-}
-
-
-int getline(FINFO *file)
-{
-    int success = 0;
-    size_t i = 0;
-
-    if (! file->eof)
-    {
-        while(1)
-        {
-            if (i == file->linesz)
-            {
-                file->linesz = file->linesz + LINESIZE;
-                if ((file->line = realloc(file->line, file->linesz)) == NULL)
-                    fatal(APPERR, ENOMALLOC);
-            }
-
-            if (file->bufpos >= file->eobuf)
-            {
-                fillbuf(file);
-                if (file->eof)
-                {
-                    if (i > 0)
-                    {
-                        file->line[i] = '\0';
-                        success = 1;
-                    }
-                    break;
-                }
-            }
-
-            if (file->buf[file->bufpos] == '\n')
-            {
-                file->bufpos++;
-                file->line[i] = '\0';
-                success = 1;
-                break;
-            }
-            else
-                file->line[i++] = file->buf[file->bufpos++];
-        }
-    }
-
-    return(success);
-}
-
-
-void fillbuf(FINFO *file)
-{
-    ssize_t n;
-
-    if (! file->eof)
-    {
-        if ((n = read(file->fd, file->buf, BUFSIZE)) < 0)
-            fatal(SYSERR, file->fn);
-
-        if (n == 0)
-            file->eof = 1;
-        else
-        {
-            file->bufpos = 0;
-            file->eobuf  = n;
-        }
-    }
-}
-
-
-void fatal(int errtype, char *s)
-{
-    if (errtype == SYSERR)
-        fprintf(stderr, "comm: %s: %s\n", s, strerror(errno));
-    else
-        fprintf(stderr, "comm: %s\n", s);
-
-    exit(1);
-}