alan@oetl.UUCP (Alan Strassberg) (09/29/88)
Here's cb.c - a C beautifier (pretty printer)
Since this is small I've posted to this group.
Compiles ok with MSC 5.1 though only tested on itself.
Should be a good start . Also compiles on unix.
alan
<--- cut, snip (also signature at end) --->
# This is a shell archive. Remove anything before this line,
# then unpack it by saving it in a file and typing "sh file".
#
# Wrapped by alan at oetl on Wed Sep 28 12:32:35 1988
#
# This archive contains:
# cb.c
#
LANG=""; export LANG
echo x - cb.c
cat >cb.c <<'@EOF'
/*
Compiled on Manx C86 by Allen Morris 3/22/86
Modified for DeSmet C by S. Lekach 3/20/86
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
To use the program type the following command line:
A>cb input.fil [output.fil]
Where input.fil is the file to be pretty printed and [output.fil]
is the destination file. If no output file is specified, then
the output goes to the console:
*/
#include <stdio.h>
FILE *f1,*f2;
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;
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;
char *outvect;
main(argc,argv)
int argc;
char *argv[];
{
int k;
/* Initialize everything here */
outvect = 1;
if (argc < 2 || argc > 3){
printf("Usage: A>Cpretty input.fil [output.fil]\n");
exit();
}
if ((f1 = fopen(*++argv,"r")) == NULL){
printf("File not found\n\n");
exit();
}
if (argc == 3){
if ((f2 = fopen(*++argv,"w")) == NULL){
print("Couldn't create output file\n");
exit();
}
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;
putsx();
sflg = 0;
break;
}
if(sflg == 0 || j > 0) string[j++] = c;
break;
case '\n':
if (eflg = lookup(welse) == 1) gotelse();
putsx();
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;
putsx();
getnl();
putsx();
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];
putsx();
tabs--;
ptabs();
if ((peek = getchr()) == ';'){
print("%c;",c);
peek = -1;
} else print("%c",c);
getnl();
putsx();
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'){
putsx();
sflg = 1;
}
}
string[j++] = cc;
if(getnl() == 1){
lchar = cc;
peek = '\n';
}
break;
case ';':
string[j++] = c;
putsx();
if(pflg[level] > 0 && ind[level] == 0){
tabs -= pflg[level];
pflg[level] = 0;
}
getnl();
putsx();
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;
putsx();
} else {
tabs--;
putsx();
tabs++;
}
if((peek = getchr()) == ';'){
print(";");
peek = -1;
}
getnl();
putsx();
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;
putsx();
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;
putsx();
sflg = 1;
break;
case '(':
string[j++] = c;
paren++;
if(lookup(wfor) == 1){
while((c = getsx()) != ';');
ct = 0;
cont:
while((c = getsx()) != ')'){
if(c == '(') ct++;
}
if(ct != 0){
ct--;
goto cont;
}
paren--;
putsx();
if(getnl() == 1){
peek = '\n';
pflg[level]++;
tabs++;
ind[level] = 0;
}
break;
}
if(lookup(wif) == 1){
putsx();
stabs[clevel][iflev] = tabs;
spflg[clevel][iflev] = pflg[level];
sind[clevel][iflev] = ind[level];
iflev++;
ifflg = 1;
}
}
}
fclose(f1);
fclose(f2);
}
ptabs(){
int i;
for (i=0; i < tabs; i++) print("\t");
}
getchr(){
if(peek<0 && lastchar != ' ' && lastchar != '\t')pchar = lastchar;
lastchar = (peek < 0) ? getc(f1) : peek;
peek = -1;
return(lastchar == '\r' ? getchr() : lastchar);
}
putsx(){
if (j > 0)
{
if (sflg != 0)
{
ptabs();
sflg = 0;
if (aflg == 1)
{
aflg = 0;
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;
int i,kk,k,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);
}
getsx(){
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'){
putsx();
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'){
putsx();
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);
}
@EOF
chmod 644 cb.c
exit 0
--
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Alan Strassberg UUCP: ..!{pyramid,leadsv}!oetl!alan
(wk) (408) 425-6126 alan@leadsv
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