jyapayne/swig
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
swig/Source/Swig/super.c
Dustin Mitchell edb0694f1b Partially complete rewrite of Doh/string.c 
git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@42 626c5289-ae23-0410-ae9c-e8d60b6d4f22
2000-01-11 22:28:48 +00:00

855 lines
22 KiB
C
Raw Blame History

# ----------------------------------------------------------------------
# Simplified Wrapper and Interface Generator (SWIG)
#
# Authors : David Beazley
# Dustin Mitchell
#
# Department of Computer Science
# University of Chicago
# 1100 E 58th Street
# Chicago, IL 60637
# beazley@cs.uchicago.edu
#
# Please read the file LICENSE for the copyright and terms by which SWIG
# can be used and distributed.
# ----------------------------------------------------------------------
#include "doh.h"
#include "swigcore.h"
#if 0
/*
* SuperStrings are just like strings, except that they maintain
* information as to the origininal file/line of each character they
* contain.
*/
typedef struct SSTag {
int position;
int line;
DOH *filename;
} SSTag;
typedef struct Super {
DOHCOMMON;
/* -- from the regular string implementation */
int maxsize; /* Max size allocated */
int len; /* Current length */
int hashkey; /* Hash key value */
int sp; /* Current position */
int lsp; /* Last returned position */
char *str; /* String data */
char pb[4]; /* Pushback data */
int pbi;
/* -- specific to the SuperString implementation */
SSTag *tags; /* array of tags */
int maxtags; /* max size allocated for tags */
int numtags; /* count of tags */
} Super;
/* Forward references for member functions */
static void DelSuper(DOH *s);
static DOH *CopySuper(DOH *s);
static void Super_clear(DOH *s);
static DOH *Super_str(DOH *s);
static int Super_delitem(DOH *s, int where);
static int Super_len(DOH *s);
static void Super_appendfv(DOH *s, char *fmt, va_list ap);
static int Super_insertfv(DOH *s, int pos, char *fmt, va_list ap);
static int Super_insert(DOH *s, int pos, DOH *DOH);
static void *Super_data(DOH *s);
static int Super_cmp(DOH *, DOH *);
static int Super_hash(DOH *s);
static int Super_dump(DOH *s, DOH *out);
static int Super_read(DOH *s, void *buffer, int length);
static int Super_write(DOH *s, void *buffer, int length);
static int Super_getc(DOH *s);
static int Super_putc(DOH *s, int ch);
static int Super_ungetc(DOH *s, int ch);
static int Super_seek(DOH *s, long offset, int whence);
static long Super_tell(DOH *s);
static int Super_replace(DOH *str, DOH *token, DOH *rep, int flags);
static void Super_chop(DOH *str);
/* internal functions */
static void Super_add(Super *s, const char *newstr);
static void Super_addchar(DOH *so, char c);
static void Super_raw_insert(Super *s, int pos, char *data, int len);
static void Super_tags_insert(Super *s, int pos, Super *new, int len);
/* method tables */
static DohSequenceMethods SuperSeqMethods = {
0, /* doh_getitem */
0, /* doh_setitem */
Super_delitem, /* doh_delitem */
Super_insert, /* doh_insitem */
0, /* doh_first */
0, /* doh_next */
};
static DohFileMethods SuperFileMethods = {
Super_read,
Super_write,
Super_putc,
Super_getc,
Super_ungetc,
Super_seek,
Super_tell,
0,
};
static DohSuperMethods SuperSuperMethods = {
Super_replace,
};
static DohObjInfo SuperType = {
"SuperString", /* objname */
sizeof(Super), /* objsize */
DelSuper, /* doh_del */
CopySuper, /* doh_copy */
Super_clear, /* doh_clear */
0, /* doh_scope */
Super_str, /* doh_str */
Super_data, /* doh_data */
Super_dump, /* doh_dump */
0, /* doh_load */
Super_len, /* doh_len */
Super_hash, /* doh_hash */
Super_cmp, /* doh_cmp */
0, /* doh_mapping */
&SuperSeqMethods, /* doh_sequence */
&SuperFileMethods, /* doh_file */
&SuperStringMethods, /* doh_string */
0, /* doh_callable */
};
#define INIT_MAXSIZE 16
#define INIT_MAXTAGS 2
/* ---- Public Functions ---- */
/* -------------------------------------------------------------------------
* NewSuperString(const char *c) - Create a new SuperString
* ------------------------------------------------------------------------- */
DOH *
NewSuper(char *s, DOH *filename, int firstline)
{
int l = 0, max;
Super *str;
str = (Super *) DohObjMalloc(sizeof(Super));
str->objinfo = &SuperType;
str->hashkey = -1;
str->sp = 0;
str->lsp = 0;
str->pbi = 0;
max = INIT_MAXSIZE;
if (s)
{
l = (int) strlen(s);
if ((l+1) > max) max = l+1;
}
str->maxsize = max;
str->str = (char *) DohMalloc(max);
assert(str);
if (s)
copy_string(str->str,s);
else
str->str[0] = 0;
str->maxtags = INIT_MAXTAGS;
str->numtags = 1;
str->tags = (SSTag *) DohMalloc(max * sizeof(SSTag));
assert(str->tags);
str->tags[0].position = 0;
if (!String_check(filename) && !SuperString_check(filename))
filename = NewString(filename);
str->tags[0].filename = filename;
str->len = l;
return (DOH *) str;
}
/* -----------------------------------------------------------------------------
* int Super_check(DOH *s) - Check if s is a Super
* ----------------------------------------------------------------------------- */
int
SuperString_check(DOH *s)
{
return (s && DohCheck(s) && ((Super *) c)->objinfo == &SuperType);
}
/* ---- "Member" Functions ---- */
/* -------------------------------------------------------------------------
* CopySuper(DOH *s) - Copy a Super
* ------------------------------------------------------------------------- */
static DOH *
CopySuper(DOH *so)
{
Super *s;
int max;
Super *str;
s = (Super *) so;
str = (Super *) DohObjMalloc(sizeof(Super));
str->objinfo = &SuperType;
str->hashkey = -1;
str->sp = 0;
str->lsp = 0;
str->pbi = 0;
max = s->maxsize;
str->str = (char *) DohMalloc(max);
memmove(str->str, s->str, s->len);
str->maxsize = max;
str->len = s->len;
str->str[str->len] = 0;
max = s->maxtags;
str->tags = (SSTag *) DohMalloc(max * sizeof(SSTag));
memmove(str->tags, s->tags, s->numtags * sizeof(SSTag));
str->numtags = s->numtags;
str->maxtags = s->maxtags;
return (DOH *) str;
}
/* -------------------------------------------------------------------------
* DelSuper(DOH *s) - Delete a Super
* ------------------------------------------------------------------------- */
static void
DelSuper(DOH *so)
{
Super *s;
s = (Super *) so;
assert(s->refcount <= 0);
if (s->str)
DohFree(s->str);
s->str = 0;
if (s->tags)
DohFree(s->tags);
s->tags = 0;
DohObjFree(s);
}
/* -------------------------------------------------------------------------
* void *Super_data(DOH *so) - Return as a 'void *'
* ------------------------------------------------------------------------- */
static void *
Super_data(DOH *so)
{
Super *s = (Super *) so;
s->str[s->len] = 0;
return (void *) s->str;
}
/* -------------------------------------------------------------------------
* int Super_dump(DOH *so, DOH *out)
*
* Serialize a Super onto out
* ------------------------------------------------------------------------- */
static int
Super_dump(DOH *so, DOH *out)
{
int nsent;
int ret;
Super *s;
s = (Super *) so;
nsent = 0;
while (nsent < s->len)
{
ret = Write(out,s->str+nsent,(s->len-nsent));
if (ret < 0) return ret;
nsent += ret;
}
return nsent;
}
/* -------------------------------------------------------------------------
* int Super_len(DOH *s) - Length of a Super
* ------------------------------------------------------------------------- */
static int
Super_len(DOH *so)
{
Super *s = (Super *)so;
return s->len;
}
/* -------------------------------------------------------------------------
* int Super_cmp(DOH *s1, DOH *s2) - Compare two Supers
* ------------------------------------------------------------------------- */
static int
Super_cmp(DOH *so1, DOH *so2)
{
/* we ignore all line number information */
Super *s1, *s2;
char *c1, *c2;
int maxlen,i;
s1 = (Super *) so1;
s2 = (Super *) so2;
maxlen = s1->len;
if (s2->len < maxlen)
maxlen = s2->len;
c1 = s1->str;
c2 = s2->str;
for (i = 0; i < maxlen; i++,c1++,c2++)
if (*c1 != *c2) break;
if (i < maxlen)
{
if (*c1 < *c2) return -1;
else return 1;
}
if (s1->len == s2->len) return 0;
if (s1->len > s2->len) return 1;
return -1;
}
/* -------------------------------------------------------------------------
* int Super_hash(DOH *s) - Compute Super hash value
* ------------------------------------------------------------------------- */
static int
Super_hash(DOH *so)
{
/* again, we ignore the line number information */
Super *s = (Super *) so;
char *c;
int i, h = 0, len;
if (s->hashkey >= 0) return s->hashkey;
c = s->str;
len = s->len > 50 ? 50 : s->len;
for (i = 0; i < len; i++)
{
h = (((h << 5) + *(c++)));
}
h = h & 0x7fffffff;
s->hashkey = h;
return h;
}
/* -------------------------------------------------------------------------
* void Super_clear(DOH *s) - Clear a Super
* ------------------------------------------------------------------------- */
void
Super_clear(DOH *so)
{
Super *s;
s = (Super *) so;
s->hashkey = -1;
s->len = 0;
*(s->str) = 0;
s->sp = 0;
s->lsp = 0;
s->line = 1;
s->pbi = 0;
s->numtags = 0;
}
/* -------------------------------------------------------------------------
* void Super_insert(DOH *so, int pos, SO *str) - Insert a Super
* ------------------------------------------------------------------------- */
int
Super_insert(DOH *so, int pos, DOH *str)
{
Super *s, *s1;
char *c;
int len;
s = (Super *) so;
/* assert(s->refcount <= 1); */ /* quasi-immutability?!? */
s1 = (Super *) str;
len = s1->len;
c = s1->str;
Super_raw_insert(s,pos,c,len);
Super_tags_insert(s,pos,s1,len);
return 0;
}
/* -----------------------------------------------------------------------------
* int Super_delitem(DOH *so, int pos)
*
* Delete an individual item
* ----------------------------------------------------------------------------- */
int Super_delitem(DOH *so, int pos)
{
Super *s = (Super *) so;
s->hashkey = -1;
if (pos == DOH_END) pos = s->len-1;
if (pos == DOH_BEGIN) pos = 0;
if (s->len == 0) return 0;
if (s->sp > pos) {
s->sp--;
#ifdef DOH_Super_UPDATE_LINES
if (s->str[pos] == '\n') s->line--;
#endif
}
memmove(s->str+pos, s->str+pos+1, ((s->len-1) - pos));
s->len--;
s->str[s->len] = 0;
return 0;
}
/* -----------------------------------------------------------------------------
* DOH *Super_str(DOH *so) - Returns a Super (used by printing commands)
* ----------------------------------------------------------------------------- */
DOH *
Super_str(DOH *so) {
DOH *nstr;
Super *s = (Super *) so;
nstr = CopySuper(s);
return nstr;
}
/* -----------------------------------------------------------------------------
* int Super_read(DOH *so, void *buffer, int len)
*
* Read data from the Super
* ----------------------------------------------------------------------------- */
int
Super_read(DOH *so, void *buffer, int len) {
int reallen, retlen;
char *cb;
Super *s = (Super *) so;
if (((s->sp-s->pbi) + len) > s->len) reallen = (s->len - (s->sp-s->pbi));
else reallen = len;
cb = (char *) buffer;
retlen = reallen;
/* Read the push-back buffer contents first */
while (reallen > 0) {
if (s->pbi <= 0) break;
*(cb++) = (char) s->pb[--s->pbi];
reallen--;
}
if (reallen > 0) {
memmove(cb, s->str+s->sp, reallen);
s->sp += reallen;
}
return retlen;
}
/* -----------------------------------------------------------------------------
* int Super_write(DOH *so, void *buffer, int len)
*
* Write data to the Super
* ----------------------------------------------------------------------------- */
int
Super_write(DOH *so, void *buffer, int len) {
int newlen;
Super *s = (Super *) so;
s->hashkey = -1;
newlen = s->sp + len+1;
if (newlen > s->maxsize) {
s->str = (char *) DohRealloc(s->str,newlen);
assert(s->str);
s->maxsize = newlen;
s->len = s->sp + len;
}
if ((s->sp+len) > s->len) s->len = s->sp + len;
memmove(s->str+s->sp,buffer,len);
s->sp += len;
s->pbi = 0;
return len;
}
/* -----------------------------------------------------------------------------
* int Super_seek(DOH *so, long offset, int whence)
*
* Seek to a new position
* ----------------------------------------------------------------------------- */
int
Super_seek(DOH *so, long offset, int whence) {
int pos, nsp, inc;
Super *s = (Super *) so;
if (whence == SEEK_SET) pos = 0;
else if (whence == SEEK_CUR) pos = s->sp;
else if (whence == SEEK_END) {
pos = s->len;
offset = -offset;
}
else pos = s->sp;
nsp = pos + offset;
if (nsp < 0) nsp = 0;
if (nsp > s->len) nsp = s->len;
if (nsp > s->sp) inc = 1;
else inc = -1;
#ifdef DOH_Super_UPDATE_LINES
while (s->sp != nsp) {
if (s->str[s->sp-1] == '\n') s->line += inc;
s->sp += inc;
}
#endif
s->sp = nsp;
s->pbi = 0;
return 0;
}
/* -----------------------------------------------------------------------------
* long Super_tell(DOH *so)
*
* Return current position
* ----------------------------------------------------------------------------- */
long
Super_tell(DOH *so) {
Super *s = (Super *) so;
return (long) (s->sp - s->pbi);
}
/* -----------------------------------------------------------------------------
* int Super_putc(DOH *so, int ch)
*
* Put a character into the Super.
* ----------------------------------------------------------------------------- */
int
Super_putc(DOH *so, int ch) {
Super *s = (Super *) so;
s->hashkey = -1;
if (s->sp >= s->len) {
Super_addchar(s,(char) ch);
} else {
s->str[s->sp] = (char) ch;
s->sp++;
#ifdef DOH_Super_UPDATE_LINES
if (ch == '\n') s->line++;
#endif
}
s->pbi = 0;
return ch;
}
/* -----------------------------------------------------------------------------
* int Super_getc(DOH *so)
*
* Get a character from the Super. Updates the line number.
* ----------------------------------------------------------------------------- */
int Super_getc(DOH *so) {
int c;
Super *s = (Super *) so;
if (s->pbi) {
c = (int) s->pb[--s->pbi];
} else if (s->sp >= s->len) c = EOF;
else c = (int) s->str[s->sp++];
#ifdef DOH_Super_UPDATE_LINES
if (c == '\n') s->line++;
#endif
return c;
}
/* -----------------------------------------------------------------------------
* int Super_ungetc(DOH *so, int ch)
*
* Put a character back on to the input stream. Updates the line count.
* ----------------------------------------------------------------------------- */
int Super_ungetc(DOH *so, int ch) {
Super *s = (Super *) so;
if (ch == EOF) return ch;
if ((s->sp - s->pbi) <= 0) return EOF;
if (s->pbi == 4) {
s->pb[0] = s->pb[1];
s->pb[1] = s->pb[2];
s->pb[2] = s->pb[3];
s->pb[3] = (char) ch;
} else {
s->pb[s->pbi++] = (char) ch;
}
#ifdef DOH_Super_UPDATE_LINES
if (ch == '\n') s->line--;
#endif
return ch;
}
/* -----------------------------------------------------------------------------
* int replace_internal(Super *str, char *token, char *rep, int flags, char *start, int count)
*
* Replaces token with rep. flags is as follows:
*
* REPLACE_ANY - Replace all occurrences
* REPLACE_NOQUOTE - Don't replace in quotes
* REPLACE_ID - Only replace valid identifiers
* REPLACE_FIRST - Only replace first occurrence
*
* start is a starting position. count is a count.
* ----------------------------------------------------------------------------- */
static
int replace_internal(Super *str, char *token, char *rep, int flags, char *start, int count)
{
char *s, *c, *t;
int tokenlen;
int state;
int repcount = 0;
/* Copy the current Super representation */
s = str->str;
str->hashkey = -1;
tokenlen = strlen(token);
/* If a starting position was given, dump those characters first */
if (start) {
c = start;
} else {
c = s;
}
/* Now walk down the old Super and search for tokens */
t = strstr(c,token);
if (t) {
str->len = 0;
str->str = (char *) DohMalloc(str->maxsize);
if (start) {
char temp = *start;
*start = 0;
Super_add(str,s);
*start = temp;
}
/* Depending on flags. We compare in different ways */
state = 0;
t = c;
while ((*c) && (count)) {
switch(state) {
case 0:
if (*c == *token) {
if (!(flags & DOH_REPLACE_ID)) {
if (strncmp(c,token,tokenlen) == 0) {
char temp = *c;
*c = 0;
Super_add(str,t);
*c = temp;
Super_add(str,rep);
c += (tokenlen-1);
t = c+1;
count--;
repcount++;
}
} else if (isalpha(*c) || (*c == '_') || (*c == '$')) {
char temp = *c;
*c = 0;
Super_add(str,t);
*c = temp;
t = c;
state = 10;
}
} else if (flags & DOH_REPLACE_NOQUOTE) {
if (*c == '\"') state = 20;
else if (*c == '\'') state = 30;
}
break;
case 10: /* The start of an identifier */
if (isalnum(*c) || (*c == '_') || (*c == '$')) state = 10;
else {
char temp = *c;
*c = 0;
if (strcmp(token,t) == 0) {
Super_add(str,rep);
count--;
repcount++;
} else {
Super_add(str,t);
}
*c = temp;
t = c;
state = 0;
}
break;
case 20: /* A Super */
if (*c == '\"') state = 0;
else if (*c == '\\') c++;
break;
case 30: /* A Single quoted Super */
if (*c == '\'') state = 0;
else if (*c == '\\') c++;
break;
}
c++;
}
if ((count) && (state == 10)) {
if (strcmp(token,t) == 0) {
Super_add(str,rep);
} else {
Super_add(str,t);
}
} else {
Super_add(str,t);
}
DohFree(s);
}
return repcount;
}
/* -----------------------------------------------------------------------------
* int Super_replace(DOH *str, DOH *token, DOH *rep, int flags)
* ----------------------------------------------------------------------------- */
int
Super_replace(DOH *stro, DOH *token, DOH *rep, int flags)
{
int count = -1;
Super *str;
if (!Super_check(stro)) return 0;
str = (Super *) stro;
assert(str->refcount);
/* assert(!str->refcount); */
if (flags & DOH_REPLACE_FIRST) count = 1;
return replace_internal(str,Char(token),Char(rep),flags,str->str,count);
}
/* -----------------------------------------------------------------------------
* void Super_chop(DOH *str)
* ----------------------------------------------------------------------------- */
void
Super_chop(DOH *s) {
char *c;
Super *str = (Super *) s;
if (!Super_check(s)) return;
/* assert(!str->refcount); */
/* Replace trailing whitespace */
c = str->str + str->len - 1;
while ((str->len >= 0) && (isspace(*c))) {
if (str->sp >= str->len) {
str->sp--;
#ifdef DOH_Super_UPDATE_LINES
if (*c == '\n') str->line--;
#endif
}
str->len--;
c--;
}
str->hashkey = -1;
str->pbi = 0;
}
/* ---- internal functions ---- */
/* -------------------------------------------------------------------------
* static Super_add(Super *s, const char *newstr) - Append to s
* ------------------------------------------------------------------------- */
static void
Super_add(Super *s, const char *newstr)
{
int newlen, newmaxsize, l, i;
if (!newstr) return;
s->hashkey = -1;
l = (int) strlen(newstr);
newlen = s->len+l + 1;
if (newlen >= s->maxsize-1) {
newmaxsize = 2*s->maxsize;
if (newlen >= newmaxsize -1) newmaxsize = newlen + 1;
s->str = (char *) DohRealloc(s->str,newmaxsize);
assert(s->str);
s->maxsize = newmaxsize;
}
strcpy(s->str+s->len,newstr);
if (s->sp >= s->len) {
#ifdef DOH_Super_UPDATE_LINES
for (i = s->sp; i < s->len+l; i++) {
if (s->str[i] == '\n') s->line++;
}
#endif
s->sp = s->len+l;
}
s->len += l;
}
/* -------------------------------------------------------------------------
* static Super_addchar(DOH *so, char c) - Add a single character to s
* ------------------------------------------------------------------------- */
static void
Super_addchar(DOH *so, char c) {
Super *s = (Super *) so;
s->hashkey = -1;
if ((s->len+1) > (s->maxsize-1)) {
s->str = (char *) DohRealloc(s->str,2*s->maxsize);
assert(s->str);
s->maxsize *= 2;
}
s->str[s->len] = c;
if (s->sp >= s->len) {
s->sp = s->len+1;
s->str[s->len+1] = 0;
#ifdef DOH_Super_UPDATE_LINES
if (c == '\n') s->line++;
#endif
}
s->len++;
}
/* -------------------------------------------------------------------------
* static Super_raw_insert(Super *s, int pos, char *data, int len)
* ------------------------------------------------------------------------- */
static void
Super_raw_insert(Super *s, int pos, char *data, int len)
{
char *nstr;
nstr = s->str;
s->hashkey = -1;
if (pos == DOH_END) {
Super_add(s, data);
return;
}
if (pos < 0) pos = 0;
else if (pos > s->len) pos = s->len;
/* See if there is room to insert the new data */
while (s->maxsize <= s->len+len) {
s->str = (char *) DohRealloc(s->str,2*s->maxsize);
assert(s->str);
s->maxsize *= 2;
}
memmove(s->str+pos+len, s->str+pos, (s->len - pos));
memcpy(s->str+pos,data,len);
if (s->sp >= s->len) {
int i;
s->sp = s->len;
#ifdef DOH_Super_UPDATE_LINES
for (i = 0; i < len; i++) {
if (data[i] == '\n') s->line++;
}
#endif
s->sp+=len;
}
s->len += len;
s->str[s->len] = 0;
}
/* -------------------------------------------------------------------------
* static Super_tags_insert(Super *s, int pos, char *data, int len)
* ------------------------------------------------------------------------- */
static void
Super_tags_insert(Super *s, int pos, Super *new, int len)
{
}
#endif
Reference in a new issue View git blame Copy permalink