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|
/* $Id: str.c,v 1.2 2005/04/08 20:45:34 erg Exp $ $Revision: 1.2 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
/* Lefteris Koutsofios - AT&T Labs Research */
#include "common.h"
#include "mem.h"
#include "code.h"
#include "tbl.h"
#include "str.h"
#include "internal.h"
static int highci;
static int indent;
#define INDINC(i) (indent += (i))
#define INDDEC(i) (indent -= (i))
static char *sbufp;
static int sbufi, sbufn;
#define SBUFINCR 1000
#define SBUFSIZE sizeof (char)
static void scalarstr (Tobj);
static void codestr (Tobj, int);
static void appends (char *);
static void appendi (long);
static void appendd (double);
static void appendnl (void);
static void growsbuf (int);
static char *copysbuf (void);
void Sinit (void) {
if (!(sbufp = malloc (SBUFINCR * SBUFSIZE)))
panic (POS, "Sinit", "sbuf malloc failed");
sbufi = 0;
sbufn = SBUFINCR;
indent = 0;
highci = -1;
}
void Sterm (void) {
indent = 0;
free (sbufp), sbufp = NULL;
sbufn = sbufi = 0;
}
char *Spath (char *path, Tobj ko) {
sbufp[(sbufi = 0)] = '\000';
appends ((path) ? path : "");
scalarstr (ko);
return copysbuf ();
}
char *Sseen (Tobj ko, char *path) {
sbufp[(sbufi = 0)] = '\000';
scalarstr (ko), appends (" = "), appends (path), appends (";");
return copysbuf ();
}
char *Sabstract (Tobj ko, Tobj vo) {
sbufp[(sbufi = 0)] = '\000';
scalarstr (ko), appends (" = ");
switch (Tgettype (vo)) {
case T_STRING:
case T_INTEGER:
case T_REAL:
scalarstr (vo);
break;
case T_CODE:
appends ("function (...) { ... }");
break;
case T_TABLE:
appends ("[ ... ]");
break;
}
appends (";");
return copysbuf ();
}
char *Stfull (Tobj ko) {
sbufp[(sbufi = 0)] = '\000';
scalarstr (ko), appends (" = [");
return copysbuf ();
}
char *Ssfull (Tobj ko, Tobj vo) {
sbufp[(sbufi = 0)] = '\000';
if (ko)
scalarstr (ko), appends (" = ");
switch (Tgettype (vo)) {
case T_STRING:
case T_INTEGER:
case T_REAL:
case T_CODE:
scalarstr (vo);
break;
}
appends (";");
return copysbuf ();
}
char *Scfull (Tobj co, int ci, int mci) {
sbufp[(sbufi = 0)] = '\000';
highci = mci;
codestr (co, ci);
highci = -1;
return copysbuf ();
}
static void scalarstr (Tobj to) {
switch (Tgettype (to)) {
case T_INTEGER:
appendi (Tgetinteger (to));
break;
case T_REAL:
appendd (Tgetreal (to));
break;
case T_STRING:
appends ("\""), appends (Tgetstring (to)), appends ("\"");
break;
case T_CODE:
codestr (to, 0);
break;
}
}
static void codestr (Tobj co, int ci) {
int ct, ct1;
int ci1, ci2;
if (highci == ci)
appends (" >> ");
switch ((ct = TCgettype (co, ci))) {
case C_ASSIGN:
codestr (co, (ci1 = TCgetfp (co, ci)));
appends (" = ");
codestr (co, TCgetnext (co, ci1));
break;
case C_OR:
case C_AND:
case C_EQ:
case C_NE:
case C_LT:
case C_LE:
case C_GT:
case C_GE:
case C_PLUS:
case C_MINUS:
case C_MUL:
case C_DIV:
case C_MOD:
codestr (co, (ci1 = TCgetfp (co, ci)));
switch (ct) {
case C_OR: appends (" | "); break;
case C_AND: appends (" & "); break;
case C_EQ: appends (" == "); break;
case C_NE: appends (" ~= "); break;
case C_LT: appends (" < "); break;
case C_LE: appends (" <= "); break;
case C_GT: appends (" > "); break;
case C_GE: appends (" >= "); break;
case C_PLUS: appends (" + "); break;
case C_MINUS: appends (" - "); break;
case C_MUL: appends (" * "); break;
case C_DIV: appends (" / "); break;
case C_MOD: appends (" % "); break;
}
codestr (co, TCgetnext (co, ci1));
break;
case C_NOT:
appends ("~");
codestr (co, TCgetfp (co, ci));
break;
case C_UMINUS:
appends ("-");
codestr (co, TCgetfp (co, ci));
break;
case C_PEXPR:
appends ("(");
codestr (co, TCgetfp (co, ci));
appends (")");
break;
case C_FCALL:
codestr (co, (ci1 = TCgetfp (co, ci)));
appends (" (");
codestr (co, TCgetnext (co, ci1));
appends (")");
break;
case C_INTEGER:
appendi (TCgetinteger (co, ci));
break;
case C_REAL:
appendd (TCgetreal (co, ci));
break;
case C_STRING:
appends ("\""), appends (TCgetstring (co, ci)), appends ("\"");
break;
case C_GVAR:
case C_LVAR:
ci1 = TCgetfp (co, ci);
appends (TCgetstring (co, ci1));
if (ct == C_LVAR)
ci1 = TCgetnext (co, ci1);
for (
ci1 = TCgetnext (co, ci1); ci1 != C_NULL;
ci1 = TCgetnext (co, ci1)
) {
switch (TCgettype (co, ci1)) {
case C_STRING:
appends ("."), appends (TCgetstring (co, ci1));
break;
case C_INTEGER:
appends ("[");
appendi (TCgetinteger (co, ci1));
appends ("]");
break;
case C_REAL:
appends ("[");
appendd (TCgetreal (co, ci1));
appends ("]");
break;
default:
appends ("[");
codestr (co, ci1);
appends ("]");
}
}
break;
case C_PVAR:
appends ("<var>");
break;
case C_FUNCTION:
ci1 = TCgetnext (co, TCgetnext (co, TCgetfp (co, ci)));
appends ("function (");
codestr (co, ci1);
ci1 = TCgetnext (co, ci1);
if (TCgettype (co, ci1) == C_INTERNAL) {
appends (") internal \"");
appends (Ifuncs[TCgetinteger (co, TCgetfp (co, ci1))].name);
appends ("\"");
} else {
appends (") {");
INDINC (2);
for (; ci1 != C_NULL; ci1 = TCgetnext (co, ci1)) {
appendnl ();
if (TCgettype (co, ci1) == C_DECL)
appends ("local "), codestr (co, ci1), appends (";");
else
codestr (co, ci1);
}
INDDEC (2);
appendnl ();
appends ("}");
}
break;
case C_TCONS:
appends ("[");
INDINC (2);
ci1 = TCgetfp (co, ci);
while (ci1 != C_NULL) {
appendnl ();
codestr (co, ci1);
appends (" = ");
ci1 = TCgetnext (co, ci1);
codestr (co, ci1);
appends (";");
ci1 = TCgetnext (co, ci1);
}
INDDEC (2);
appendnl ();
appends ("]");
break;
case C_DECL:
ci1 = TCgetfp (co, ci);
while (ci1 != C_NULL) {
appends (TCgetstring (co, ci1));
ci1 = TCgetnext (co, ci1);
if (ci1 != C_NULL)
appends (", ");
}
break;
case C_STMT:
ci1 = TCgetfp (co, ci);
if (ci1 == C_NULL) {
appends (";");
break;
}
if (TCgetnext (co, ci1) == C_NULL) {
codestr (co, ci1);
ct1 = TCgettype (co, ci1);
if (!C_ISSTMT (ct1))
appends (";");
} else {
appends (" {");
INDINC (2);
for (; ci1 != C_NULL; ci1 = TCgetnext (co, ci1)) {
appendnl ();
codestr (co, ci1);
}
INDDEC (2);
appendnl ();
appends ("}");
}
break;
case C_IF:
ci1 = TCgetfp (co, ci);
appends ("if (");
codestr (co, ci1);
appends (")");
ci1 = TCgetnext (co, ci1);
ci2 = TCgetfp (co, ci1);
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
INDINC (2);
appendnl ();
codestr (co, ci1);
INDDEC (2);
} else {
codestr (co, ci1);
}
ci1 = TCgetnext (co, ci1);
if (ci1 == C_NULL)
break;
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
appendnl ();
appends ("else");
} else {
appends (" else");
}
ci2 = TCgetfp (co, ci1);
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
INDINC (2);
appendnl ();
codestr (co, ci1);
INDDEC (2);
} else {
codestr (co, ci1);
}
break;
case C_WHILE:
ci1 = TCgetfp (co, ci);
appends ("while (");
codestr (co, ci1);
ci1 = TCgetnext (co, ci1);
ci2 = TCgetfp (co, ci1);
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
appends (")");
INDINC (2);
appendnl ();
codestr (co, ci1);
INDDEC (2);
} else {
appends (")");
codestr (co, ci1);
}
break;
case C_FOR:
ci1 = TCgetfp (co, ci);
appends ("for (");
codestr (co, ci1);
appends ("; ");
ci1 = TCgetnext (co, ci1);
codestr (co, ci1);
appends ("; ");
ci1 = TCgetnext (co, ci1);
codestr (co, ci1);
ci1 = TCgetnext (co, ci1);
ci2 = TCgetfp (co, ci1);
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
appends (")");
INDINC (2);
appendnl ();
codestr (co, ci1);
INDDEC (2);
} else {
appends (")");
codestr (co, ci1);
}
break;
case C_FORIN:
ci1 = TCgetfp (co, ci);
appends ("for (");
codestr (co, ci1);
appends (" in ");
ci1 = TCgetnext (co, ci1);
codestr (co, ci1);
ci1 = TCgetnext (co, ci1);
ci2 = TCgetfp (co, ci1);
if (ci2 == C_NULL || TCgetnext (co, ci2) == C_NULL) {
appends (")");
INDINC (2);
appendnl ();
codestr (co, ci1);
INDDEC (2);
} else {
appends (")");
codestr (co, ci1);
}
break;
case C_BREAK:
appends ("break;");
break;
case C_CONTINUE:
appends ("continue;");
break;
case C_RETURN:
ci1 = TCgetfp (co, ci);
appends ("return");
if (ci1 != C_NULL) {
appends (" ");
codestr (co, ci1);
}
appends (";");
break;
case C_ARGS:
ci1 = TCgetfp (co, ci);
while (ci1 != C_NULL) {
codestr (co, ci1);
ci1 = TCgetnext (co, ci1);
if (ci1 != C_NULL)
appends (", ");
}
break;
default:
panic (POS, "codestr", "bad object type: %d", ct);
}
}
static void appends (char *s) {
int n;
n = strlen (s) + 1;
if (sbufi + n > sbufn)
growsbuf (n);
strcpy (&sbufp[sbufi], s);
sbufi += (n - 1);
}
static void appendi (long i) {
char buf[40];
int n;
sprintf (buf, "%ld", i);
n = strlen (buf) + 1;
if (sbufi + n > sbufn)
growsbuf (n);
strcpy (&sbufp[sbufi], buf);
sbufi += (n - 1);
}
static void appendd (double d) {
char buf[40];
int n;
sprintf (buf, "%lf", d);
n = strlen (buf) + 1;
if (sbufi + n > sbufn)
growsbuf (n);
strcpy (&sbufp[sbufi], buf);
sbufi += (n - 1);
}
static void appendnl (void) {
int i, n;
n = indent + 1;
if (sbufi + n > sbufn)
growsbuf (n);
sbufp[sbufi++] = '\n';
for (i = 0; i < indent; i++)
sbufp[sbufi++] = ' ';
}
static void growsbuf (int ssize) {
int nsize;
nsize = ((sbufn + ssize) / SBUFINCR + 1) * SBUFINCR;
if (!(sbufp = realloc (sbufp, nsize * SBUFSIZE)))
panic (POS, "growsbuf", "sbuf realloc failed");
sbufn = nsize;
}
static char *copysbuf (void) {
char *newsbufp;
sbufp[sbufi++] = '\000';
if (!(newsbufp = malloc (sbufi * sizeof (char))))
panic (POS, "copysbuf", "newsbuf malloc failed");
strcpy (newsbufp, sbufp);
return newsbufp;
}
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