85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
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/*
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** This program checks for formatting problems in source code:
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**
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** * Any use of tab characters
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** * White space at the end of a line
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** * Blank lines at the end of a file
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**
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** Any violations are reported.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define CR_OK 0x001
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#define WSEOL_OK 0x002
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static void checkSpacing(const char *zFile, unsigned flags){
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FILE *in = fopen(zFile, "rb");
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int i;
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int seenSpace;
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int seenTab;
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int ln = 0;
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int lastNonspace = 0;
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char zLine[2000];
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if( in==0 ){
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printf("cannot open %s\n", zFile);
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return;
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}
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while( fgets(zLine, sizeof(zLine), in) ){
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seenSpace = 0;
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seenTab = 0;
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ln++;
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for(i=0; zLine[i]; i++){
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if( zLine[i]=='\t' && seenTab==0 ){
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printf("%s:%d: tab (\\t) character\n", zFile, ln);
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seenTab = 1;
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}else if( zLine[i]=='\r' ){
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if( (flags & CR_OK)==0 ){
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printf("%s:%d: carriage-return (\\r) character\n", zFile, ln);
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}
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}else if( zLine[i]==' ' ){
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seenSpace = 1;
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}else if( zLine[i]!='\n' ){
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lastNonspace = ln;
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seenSpace = 0;
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}
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}
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if( seenSpace && (flags & WSEOL_OK)==0 ){
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printf("%s:%d: whitespace at end-of-line\n", zFile, ln);
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}
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}
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fclose(in);
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if( lastNonspace<ln ){
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printf("%s:%d: blank lines at end of file (%d)\n",
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zFile, ln, ln - lastNonspace);
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}
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}
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int main(int argc, char **argv){
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int i;
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unsigned flags = WSEOL_OK;
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for(i=1; i<argc; i++){
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const char *z = argv[i];
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if( z[0]=='-' ){
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while( z[0]=='-' ) z++;
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if( strcmp(z,"crok")==0 ){
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flags |= CR_OK;
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}else if( strcmp(z, "wseol")==0 ){
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flags &= ~WSEOL_OK;
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}else if( strcmp(z, "help")==0 ){
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printf("Usage: %s [options] FILE ...\n", argv[0]);
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printf(" --crok Do not report on carriage-returns\n");
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printf(" --wseol Complain about whitespace at end-of-line\n");
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printf(" --help This message\n");
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}else{
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printf("unknown command-line option: [%s]\n", argv[i]);
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printf("use --help for additional information\n");
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}
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}else{
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checkSpacing(argv[i], flags);
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}
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}
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return 0;
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}
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