diff options
Diffstat (limited to 'src/sort.c')
| -rw-r--r-- | src/sort.c | 52 |
1 files changed, 36 insertions, 16 deletions
diff --git a/src/sort.c b/src/sort.c index a1b5e60f5..b1b8893a8 100644 --- a/src/sort.c +++ b/src/sort.c @@ -1,5 +1,5 @@ /* sort - sort lines of text (with all kinds of options). - Copyright (C) 88, 91, 92, 93, 94, 95, 1996 Free Software Foundation + Copyright (C) 88, 91, 92, 93, 94, 95, 1996, 1997 Free Software Foundation 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 @@ -37,11 +37,11 @@ #include "xstrtod.h" #ifdef HAVE_LIMITS_H -#include <limits.h> +# include <limits.h> #else -#ifndef UCHAR_MAX -#define UCHAR_MAX 255 -#endif +# ifndef UCHAR_MAX +# define UCHAR_MAX 255 +# endif #endif #ifndef STDC_HEADERS char *malloc (); @@ -57,7 +57,7 @@ void free (); #define UCHAR(c) ((unsigned char) (c)) #ifndef DEFAULT_TMPDIR -#define DEFAULT_TMPDIR "/tmp" +# define DEFAULT_TMPDIR "/tmp" #endif /* Use this as exit status in case of error, not EXIT_FAILURE. This @@ -1203,18 +1203,26 @@ compare (register const struct line *a, register const struct line *b) return reverse ? -diff : diff; } -/* Check that the lines read from the given FP come in order. Return - 1 if they do and 0 if there is a disorder. - FIXME: return number of first out-of-order line if not sorted. */ +/* Check that the lines read from the given FP come in order. Print a + diagnostic to stderr (POSIX says -c shouldn't write to stdout) and return + the line number of the first out-of-order line (counting from 1) if they + are not in order. Otherwise, print no diagnostic and return zero. */ static int -checkfp (FILE *fp) +checkfp (FILE *fp, const char *file) { struct buffer buf; /* Input buffer. */ struct lines lines; /* Lines scanned from the buffer. */ struct line temp; /* Copy of previous line. */ int cc; /* Character count. */ - int alloc, sorted = 1; + int alloc; + int line_number = 1; + struct line *disorder_line; + int disorder_line_number = 0; + +#ifdef lint /* Suppress `used before initialized' warning. */ + disorder_line = NULL; +#endif initbuf (&buf, mergealloc); initlines (&lines, mergealloc / linelength + 1, @@ -1240,11 +1248,14 @@ checkfp (FILE *fp) cmp = compare (&lines.lines[i], &lines.lines[i + 1]); if ((unique && cmp >= 0) || (cmp > 0)) { - sorted = 0; + disorder_line = &lines.lines[i + 1]; + disorder_line_number = line_number + i + 1; goto finish; } } + line_number += lines.used; + /* Save the last line of the buffer and refill the buffer. */ prev_line = lines.lines + (lines.used - 1); if (prev_line->length + 1 > alloc) @@ -1272,17 +1283,27 @@ checkfp (FILE *fp) cmp = compare (&temp, &lines.lines[0]); if ((unique && cmp >= 0) || (cmp > 0)) { - sorted = 0; + disorder_line = &lines.lines[0]; + disorder_line_number = line_number; break; } } finish: xfclose (fp); + + if (disorder_line_number) + { + fprintf (stderr, _("%s: %s:%d: disorder: "), program_name, file, + disorder_line_number); + write_bytes (disorder_line->text, disorder_line->length, stderr); + putc (eolchar, stderr); + } + free (buf.buf); free ((char *) lines.lines); free (temp.text); - return sorted; + return disorder_line_number; } /* Merge lines from FPS onto OFP. NFPS cannot be greater than NMERGE. @@ -1500,9 +1521,8 @@ check (char **files, int nfiles) for (i = 0; i < nfiles; ++i) { fp = xfopen (files[i], "r"); - if (!checkfp (fp)) + if (checkfp (fp, files[i])) { - fprintf (stderr, _("%s: disorder on %s\n"), program_name, files[i]); ++disorders; } } |