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cb.c
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C/C++ Source or Header
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1988-05-31
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12KB
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534 lines
/*
CB.C
Modified for Lattice C Ver 1.01
by: John W. Kindschi Jr. (10-30-83)
Swiped from CPIG'S UNIX system and modified to
run under BDS C by William C. Colley, III
Further modified by Bert Kleinman 9/30/86:
File extension defaults to .c
Indent defaults to 3
Uses temp file cb.$$$, then renames input to .BAK
Converstion to MSC 4.0
Usage: cb filname [indent]
*/
#include <stdio.h>
#include <string.h>
#define INDENT_SPACES 4 /* default number of spaces to indent */
int slevel[10];
int clevel;
int spflg[20][10];
int sind[20][10];
int siflev[10];
int sifflg[10];
int iflev;
int ifflg;
int level;
int eflg;
int paren;
int aflg;
int ct;
int stabs[20][10];
int qflg;
int j;
int sflg;
int bflg;
int peek;
int tabs;
FILE *f1, *f2;
static int ind[10] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
static int pflg[10] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
char lchar;
char pchar;
char *wif[2];
char *welse[2];
char *wfor[2];
char *wds[3];
char cc;
char string[200];
int lastchar;
int c;
int outvect;
char infile[75];
char bakfile[75];
int indent;
main(argc,argv)
int argc;
char *argv[];
{
char tempfile[15];
int result;
char *p;
int k; /* Initialize everything here */
outvect = 1;
if (argc < 2 || argc > 3)
{
print("\nUsage: cb infile [indent]\n");
exit(1);
}
/* set indent - either from cmd line or default */
if( argc != 3 )
{
indent = INDENT_SPACES;
}
else
{
indent = atoi( argv[2] );
if( indent > 10 || indent < 0) /* if invalid indent */
{
print("Error: Valid indents are 0 - 10\n");
exit(1);
}
}
/* add default extension of .c if necessary */
strcpy( infile, argv[1] );
if( strchr( infile, '.' ) == NULL )
strcat(infile, ".c");
/* open input file */
if( (f1 = fopen(infile,"r")) == NULL )
{
print("Error: input file can't be opened\n");
exit(1);
}
/* open temp file */
strcpy(tempfile,"cb.$$$");
if( (f2 = fopen(tempfile,"w")) == NULL )
{
print("Error: temporary file can't be opened\n");
exit(1);
}
outvect = 0;
clevel = iflev = level = eflg = paren = 0;
aflg = qflg = j = bflg = tabs = 0;
ifflg = peek = -1;
sflg = 1;
wif[0] = "if";
welse[0] = "else";
wfor[0] = "for";
wds[0] = "case";
wds[1] = "default";
wif[1] = welse[1] = wfor[1] = wds[2] = 0;
/* End of Initialization */
while ((c = getchr()) != EOF){
switch(c){
default:
string[j++] = c;
if (c != ',') lchar = c;
break;
case ' ':
case '\t':
if (lookup (welse) == 1){
gotelse();
if(sflg == 0 || j > 0)string[j++] = c;
puts();
sflg = 0;
break;
}
if(sflg == 0 || j > 0) string[j++] = c;
break;
case '\n':
if (eflg = lookup(welse) == 1) gotelse();
puts();
print ("\n");
sflg = 1;
if (eflg == 1){
pflg[level]++;
tabs++;
}
else
if(pchar == lchar)
aflg = 1;
break;
case '{':
if (lookup(welse) == 1) gotelse();
siflev[clevel] = iflev;
sifflg[clevel] = ifflg;
iflev = ifflg = 0;
clevel++;
if (sflg == 1 && pflg[level] != 0){
pflg[level]--;
tabs--;
}
string[j++] = c;
puts();
getnl();
puts();
print("\n");
tabs++;
sflg = 1;
if (pflg[level] > 0){
ind[level] = 1;
level++;
slevel[level] = clevel;
}
break;
case '}':
clevel--;
if ((iflev = siflev[clevel]-1) < 0) iflev = 0;
ifflg = sifflg[clevel];
puts();
tabs--;
ptabs();
if ((peek = getchr()) == ';'){
print("%c;",c);
peek = -1;
}
else print("%c",c);
getnl();
puts();
print("\n");
sflg = 1;
if (clevel < slevel[level]) if (level > 0) level--;
if (ind[level] != 0){
tabs -= pflg[level];
pflg[level] = 0;
ind[level] = 0;
}
break;
case '"':
case '\'':
string[j++] = c;
while((cc = getchr()) != c){
string[j++] = cc;
if(cc == '\\'){
string[j++] = getchr();
}
if(cc == '\n'){
puts();
sflg = 1;
}
}
string[j++] = cc;
if(getnl() == 1){
lchar = cc;
peek = '\n';
}
break;
case ';':
string[j++] = c;
puts();
if(pflg[level] > 0 && ind[level] == 0){
tabs -= pflg[level];
pflg[level] = 0;
}
getnl();
puts();
print("\n");
sflg = 1;
if(iflev > 0)
if(ifflg == 1){
iflev--;
ifflg = 0;
}
else iflev = 0;
break;
case '\\':
string[j++] = c;
string[j++] = getchr();
break;
case '?':
qflg = 1;
string[j++] = c;
break;
case ':':
string[j++] = c;
if(qflg == 1){
qflg = 0;
break;
}
if(lookup(wds) == 0){
sflg = 0;
puts();
}
else{
tabs--;
puts();
tabs++;
}
if((peek = getchr()) == ';'){
print(";");
peek = -1;
}
getnl();
puts();
print("\n");
sflg = 1;
break;
case '/':
string[j++] = c;
if((peek = getchr()) != '*') break;
string[j++] = peek;
peek = -1;
comment();
break;
case ')':
paren--;
string[j++] = c;
puts();
if(getnl() == 1){
peek = '\n';
if(paren != 0) aflg = 1;
else if(tabs > 0){
pflg[level]++;
tabs++;
ind[level] = 0;
}
}
break;
case '#':
string[j++] = c;
while((cc = getchr()) != '\n') string[j++] = cc;
string[j++] = cc;
sflg = 0;
puts();
sflg = 1;
break;
case '(':
string[j++] = c;
paren++;
if(lookup(wfor) == 1){
while((c = getsc()) != ';');
ct = 0;
cont:
while((c = getsc()) != ')'){
if(c == '(') ct++;
}
if(ct != 0){
ct--;
goto cont;
}
paren--;
puts();
if(getnl() == 1){
peek = '\n';
pflg[level]++;
tabs++;
ind[level] = 0;
}
break;
}
if(lookup(wif) == 1){
puts();
stabs[clevel][iflev] = tabs;
spflg[clevel][iflev] = pflg[level];
sind[clevel][iflev] = ind[level];
iflev++;
ifflg = 1;
}
}
}
result = fcloseall();
/* construct bakfile name */
strcpy(bakfile, infile);
p = strchr(bakfile, '.');
*p = '\0';
strcat(bakfile, ".BAK");
/* erase bakfile if it exists */
if( access(bakfile, 0) == 0)
{
result = unlink( bakfile );
if(result != 0 )
{
print("Error: can erase old .BAK file\n");
printf("Results in %s\n",tempfile);
exit(1);
}
}
/* rename input file to .BAK */
result = rename(infile, bakfile);
if( result != 0 )
{
printf("Error: can't rename infile to .BAK\n");
printf("Results in %s\n",tempfile);
exit(1);
}
result = rename(tempfile, infile);
if( result != 0 )
{
printf("Error: can't rename tempefile to infile\n");
printf("Results in %s\n",tempfile);
exit(1);
}
}
ptabs(){
register int i;
register int j;
for (i=0; i < tabs; i++)
for( j = 0; j < indent; j++ )
putc(' ', f2 );
}
getchr(){
if(peek<0 && lastchar != ' ' && lastchar != '\t')pchar = lastchar;
lastchar = (peek < 0) ? getc(f1) : peek;
peek = -1;
return(lastchar == '\r' ? getchr() : lastchar);
}
puts(){
register int i;
if (j > 0)
{
if (sflg != 0)
{
ptabs();
sflg = 0;
if (aflg == 1)
{
aflg = 0;
/* commented out to */
/* prevent indentation of brace after else */
/* if (tabs > 0) print (" "); */
}
}
string[j] = '\0';
print("%s",string);
j = 0;
}
else
{
if (sflg != 0)
{
sflg = 0;
aflg = 0;
}
}
}
lookup(tab)
char *tab[];
{
char r;
register int i,k;
int kk,l;
if(j < 1) return(0);
kk = 0;
while (string[kk] == ' ') kk++;
for (i = 0; tab[i] != 0; i++)
{
l = 0;
for(k=kk;(r = tab[i][l++]) == string[k] && r != '\0';k++);
if(r == '\0' && (string[k] < 'a' || string[k] > 'z'))return(1);
}
return(0);
}
getsc(){
register char ch;
beg:
if((ch = string[j++] = getchr()) == '\\')
{
string[j++] = getchr();
goto beg;
}
if(ch == '\'' || ch == '"')
{
while((cc = string[j++] = getchr()) != ch) if(cc == '\\') string[j++] = getchr();
goto beg;
}
if(ch == '\n'){
puts();
aflg = 1;
goto beg;
}
else return(ch);
}
gotelse(){
tabs = stabs[clevel][iflev];
pflg[level] = spflg[clevel][iflev];
ind[level] = sind[clevel][iflev];
ifflg = 1;
}
getnl(){
while ((peek = getchr()) == '\t' || peek == ' '){
string[j++] = peek;
peek = -1;
}
if((peek = getchr()) == '/'){
peek = -1;
if ((peek = getchr()) == '*'){
string[j++] = '/';
string[j++] = '*';
peek = -1;
comment();
}
else string[j++] = '/';
}
if((peek = getchr()) == '\n'){
peek = -1;
return(1);
}
return(0);
}
comment(){
rep:
while ((c = string[j++] = getchr()) != '*')
if (c == '\n'){
puts();
sflg = 1;
}
gotstar:
if ((c = string[j++] = getchr()) != '/'){
if (c == '*') goto gotstar;
goto rep;
}
}
print(fmt,args)
char *fmt;
unsigned args;
{
if (outvect == 1) printf(fmt,args);
else if (outvect == 0) fprintf(f2,fmt,args);
}
_setenvp()
{
}