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/* ml_count: given a list of ML files on the command line,
count the SLOC in each one. SLOC = physical, non-comment lines.
This is part of SLOCCount, a toolsuite that counts source lines of code (SLOC).
Copyright (C) 2001-2004 David A. Wheeler and Michal Moskal
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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
To contact David A. Wheeler, see his website at:
http://www.dwheeler.com.
Michal Moskal may be contacted at malekith at pld-linux.org.
Based on c_count.c by:
(C) Copyright 2000 David A. Wheeler
Michal Moskal rewrote sloc_count() function, to support ML.
Usage: Use in one of the following ways:
ml_count # As filter
ml_count [-f file] [list_of_files]
file: file with a list of files to count (if "-", read list from stdin)
list_of_files: list of files to count
Michal Moskal states "It was easier to get string escaping and comment
nesting right in C then in Perl. It would be even easier in OCaml... ;-)"
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
/* Globals */
long total_sloc;
int peek(FILE *stream) {
int c = getc(stream);
ungetc(c, stream);
return c;
}
int ispeek(int c, FILE *stream) {
if (c == peek(stream)) {return 1;}
return 0;
}
long line_number;
int getachar(FILE *stream) {
/* Like getchar(), but keep track of line number. */
static int last_char_was_newline = 0;
int c;
c = getc(stream);
if (last_char_was_newline) line_number++;
if (c == '\n') last_char_was_newline=1;
else last_char_was_newline=0;
return c;
}
long sloc_count(char *filename, FILE *stream) {
/* Count the sloc in the program in stdin. */
long sloc = 0;
int sawchar = 0; /* Did you see a character on this line? */
int c;
int comment_lev = 0; /* Level of comment nesting. */
int in_string = 0; /* 0 or 1 */
while ((c = getachar(stream)) != EOF) {
switch (c) {
case '"':
in_string = !in_string;
break;
case '(':
if (!in_string && ispeek('*', stream)) {
comment_lev++;
getachar(stream); /* skip '*' */
}
break;
case '*':
if (comment_lev && !in_string && ispeek(')', stream)) {
comment_lev--;
getachar(stream); /* skip ')' */
continue /* while */;
}
break;
case '\\':
/* Ignore next character if in string. But don't ignore newlines. */
if (in_string && !ispeek('\n', stream))
getachar(stream);
break;
case ' ':
case '\t':
/* just ignore blanks */
continue /* while */;
case '\n':
if (sawchar) {
sloc++;
sawchar = 0;
}
continue /* while */;
default:
break;
}
if (comment_lev == 0)
sawchar = 1;
}
/* We're done with the file. Handle EOF-without-EOL. */
if (sawchar) sloc++;
if (comment_lev) {
fprintf(stderr, "ml_count ERROR - terminated in comment in %s\n", filename);
} else if (in_string) {
fprintf(stderr, "ml_count ERROR - terminated in string in %s\n", filename);
}
return sloc;
}
void count_file(char *filename) {
long sloc;
FILE *stream;
stream = fopen(filename, "r");
line_number = 1;
sloc = sloc_count(filename, stream);
total_sloc += sloc;
printf("%ld %s\n", sloc, filename);
fclose(stream);
}
char *read_a_line(FILE *file) {
/* Read a line in, and return a malloc'ed buffer with the line contents.
Any newline at the end is stripped.
If there's nothing left to read, returns NULL. */
/* We'll create a monstrously long buffer to make life easy for us: */
char buffer[10000];
char *returnval;
char *newlinepos;
returnval = fgets(buffer, sizeof(buffer), file);
if (returnval) {
newlinepos = buffer + strlen(buffer) - 1;
if (*newlinepos == '\n') {*newlinepos = '\0';};
return strdup(buffer);
} else {
return NULL;
}
}
int main(int argc, char *argv[]) {
long sloc;
int i;
FILE *file_list;
char *s;
total_sloc = 0;
line_number = 1;
if (argc <= 1) {
sloc = sloc_count("-", stdin);
printf("%ld %s\n", sloc, "-");
total_sloc += sloc;
} else if ((argc == 3) && (!strcmp(argv[1], "-f"))) {
if (!strcmp (argv[2], "-")) {
file_list = stdin;
} else {
file_list = fopen(argv[2], "r");
}
if (file_list) {
while ((s = read_a_line(file_list))) {
count_file(s);
free(s);
}
}
} else {
for (i=1; i < argc; i++) { count_file(argv[i]); }
}
printf("Total:\n");
printf("%ld\n", total_sloc);
return 0; /* Report success */
}
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