When substituting .for control variables any } or ) that matches the
${ or $( must be \ escaped. Should fix some pkgsrc issues - eg 'clean' in print/gv.
This commit is contained in:
parent
aba4927178
commit
b19182e92b
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: for.c,v 1.41 2008/12/29 10:12:30 dsl Exp $ */
|
||||
/* $NetBSD: for.c,v 1.42 2009/01/10 16:59:02 dsl Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1992, The Regents of the University of California.
|
||||
|
@ -30,14 +30,14 @@
|
|||
*/
|
||||
|
||||
#ifndef MAKE_NATIVE
|
||||
static char rcsid[] = "$NetBSD: for.c,v 1.41 2008/12/29 10:12:30 dsl Exp $";
|
||||
static char rcsid[] = "$NetBSD: for.c,v 1.42 2009/01/10 16:59:02 dsl Exp $";
|
||||
#else
|
||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
|
||||
#if 0
|
||||
static char sccsid[] = "@(#)for.c 8.1 (Berkeley) 6/6/93";
|
||||
#else
|
||||
__RCSID("$NetBSD: for.c,v 1.41 2008/12/29 10:12:30 dsl Exp $");
|
||||
__RCSID("$NetBSD: for.c,v 1.42 2009/01/10 16:59:02 dsl Exp $");
|
||||
#endif
|
||||
#endif /* not lint */
|
||||
#endif
|
||||
|
@ -61,6 +61,10 @@ __RCSID("$NetBSD: for.c,v 1.41 2008/12/29 10:12:30 dsl Exp $");
|
|||
#include "buf.h"
|
||||
#include "strlist.h"
|
||||
|
||||
#define FOR_SUB_ESCAPE_COLON 1
|
||||
#define FOR_SUB_ESCAPE_BRACE 2
|
||||
#define FOR_SUB_ESCAPE_PAREN 4
|
||||
|
||||
/*
|
||||
* For statements are of the form:
|
||||
*
|
||||
|
@ -130,10 +134,8 @@ For_Eval(char *line)
|
|||
{
|
||||
char *ptr = line, *sub;
|
||||
int len;
|
||||
int i;
|
||||
int escapes;
|
||||
int depth;
|
||||
char ch;
|
||||
unsigned char ch;
|
||||
|
||||
/* Forget anything we previously knew about - it cannot be useful */
|
||||
memset(&accumFor, 0, sizeof accumFor);
|
||||
|
@ -173,7 +175,7 @@ For_Eval(char *line)
|
|||
ptr += 2;
|
||||
break;
|
||||
}
|
||||
strlist_add_str(&accumFor.vars, make_str(ptr, len));
|
||||
strlist_add_str(&accumFor.vars, make_str(ptr, len), len);
|
||||
}
|
||||
|
||||
if (strlist_num(&accumFor.vars) == 0) {
|
||||
|
@ -186,7 +188,7 @@ For_Eval(char *line)
|
|||
|
||||
/*
|
||||
* Make a list with the remaining words
|
||||
* The values are substituted as ${:U<value>... so we must \ escape
|
||||
* The values are substituted as ${:U<value>...} so we must \ escape
|
||||
* characters that break that syntax - particularly ':', maybe $ and \.
|
||||
*/
|
||||
sub = Var_Subst(NULL, ptr, VAR_GLOBAL, FALSE);
|
||||
|
@ -197,27 +199,15 @@ For_Eval(char *line)
|
|||
if (*ptr == 0)
|
||||
break;
|
||||
escapes = 0;
|
||||
for (len = 0; ptr[len] && !isspace((unsigned char)ptr[len]); len++)
|
||||
if (ptr[len] == ':')
|
||||
escapes++;
|
||||
if (escapes == 0)
|
||||
strlist_add_str(&accumFor.items, make_str(ptr, len));
|
||||
else {
|
||||
char *item = bmake_malloc(len + escapes + 1);
|
||||
strlist_add_str(&accumFor.items, item);
|
||||
for (depth= 0, i = 0; i < len; i++) {
|
||||
ch = ptr[i];
|
||||
/* Loose determination of nested variable definitions. */
|
||||
if (ch == '(' || ch == '{')
|
||||
depth++;
|
||||
else if (ch == ')' || ch == '}')
|
||||
depth--;
|
||||
else if (ch == ':' && depth == 0)
|
||||
*item++ = '\\';
|
||||
*item++ = ch;
|
||||
}
|
||||
*item = 0;
|
||||
for (len = 0; (ch = ptr[len]) != 0 && !isspace(ch); len++) {
|
||||
if (ch == ':')
|
||||
escapes |= FOR_SUB_ESCAPE_COLON;
|
||||
else if (ch == ')')
|
||||
escapes |= FOR_SUB_ESCAPE_PAREN;
|
||||
else if (ch == /*{*/ '}')
|
||||
escapes |= FOR_SUB_ESCAPE_BRACE;
|
||||
}
|
||||
strlist_add_str(&accumFor.items, make_str(ptr, len), escapes);
|
||||
}
|
||||
|
||||
free(sub);
|
||||
|
@ -285,6 +275,55 @@ For_Accum(char *line)
|
|||
*
|
||||
*-----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
static void
|
||||
for_substitute(Buffer cmds, strlist_t *items, unsigned int item_no, char ech)
|
||||
{
|
||||
int depth, var_depth;
|
||||
int escape;
|
||||
const char *item = strlist_str(items, item_no);
|
||||
int i;
|
||||
char ch;
|
||||
#define MAX_DEPTH 0x7fffffff
|
||||
|
||||
/* If there were no escapes, or the only escape is the other variable
|
||||
* terminator, then just substitute the full string */
|
||||
if (!(strlist_info(items, item_no) &
|
||||
(ech == ')' ? ~FOR_SUB_ESCAPE_BRACE : ~FOR_SUB_ESCAPE_PAREN))) {
|
||||
Buf_AddBytes(cmds, strlen(item), item);
|
||||
return;
|
||||
}
|
||||
|
||||
/* Escape ':' and 'ech' provided they aren't inside variable expansions */
|
||||
depth = 0;
|
||||
var_depth = MAX_DEPTH;
|
||||
escape = -1;
|
||||
for (i = 0; (ch = item[i]) != 0; i++) {
|
||||
/* Loose determination of nested variable definitions. */
|
||||
if (ch == '(' || ch == '{') {
|
||||
depth++;
|
||||
if (var_depth == MAX_DEPTH && i != 0 && item[i-1] == '$')
|
||||
var_depth = depth;
|
||||
} else if (ch == ')' || ch == '}') {
|
||||
if (ch == ech && depth < var_depth)
|
||||
escape = i;
|
||||
if (depth == var_depth)
|
||||
var_depth = MAX_DEPTH;
|
||||
depth--;
|
||||
} else if (ch == ':' && depth < var_depth)
|
||||
escape = i;
|
||||
if (escape == i)
|
||||
Buf_AddByte(cmds, '\\');
|
||||
Buf_AddByte(cmds, ch);
|
||||
}
|
||||
|
||||
if (escape == -1) {
|
||||
/* We didn't actually need to escape anything, remember for next time */
|
||||
strlist_set_info(items, item_no, strlist_info(items, item_no) &
|
||||
(ech == ')' ? ~FOR_SUB_ESCAPE_PAREN : ~FOR_SUB_ESCAPE_BRACE));
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
For_Run(int lineno)
|
||||
{
|
||||
|
@ -292,7 +331,7 @@ For_Run(int lineno)
|
|||
int i, len;
|
||||
unsigned int num_items;
|
||||
char *for_body;
|
||||
char *var, *item;
|
||||
char *var;
|
||||
char *cp;
|
||||
char *cmd_cp;
|
||||
char *body_end;
|
||||
|
@ -337,31 +376,30 @@ For_Run(int lineno)
|
|||
cmds = Buf_Init(len + 256);
|
||||
cmd_cp = for_body;
|
||||
for (cp = for_body; (cp = strchr(cp, '$')) != NULL;) {
|
||||
char ech;
|
||||
ch = *++cp;
|
||||
if (ch == '(' || ch == '{') {
|
||||
char ech = ch == '(' ? ')' : '}';
|
||||
if ((ch == '(' && (ech = ')')) || (ch == '{' && (ech = '}'))) {
|
||||
cp++;
|
||||
/* Check variable name against the .for loop variables */
|
||||
STRLIST_FOREACH(var, &arg.vars, i) {
|
||||
len = strlen(var);
|
||||
len = strlist_info(&arg.vars, i);
|
||||
if (memcmp(cp, var, len) != 0)
|
||||
continue;
|
||||
if (cp[len] != ':' && cp[len] != ech && cp[len] != '\\')
|
||||
continue;
|
||||
/* Found a variable match. Replace with ${:U<value> */
|
||||
/* Found a variable match. Replace with :U<value> */
|
||||
Buf_AddBytes(cmds, cp - cmd_cp, cmd_cp);
|
||||
Buf_AddBytes(cmds, 2, ":U");
|
||||
cp += len;
|
||||
cmd_cp = cp;
|
||||
item = strlist_str(&arg.items, num_items + i);
|
||||
Buf_AddBytes(cmds, strlen(item), item);
|
||||
for_substitute(cmds, &arg.items, num_items + i, ech);
|
||||
break;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
if (ch == 0)
|
||||
break;
|
||||
/* Probably a single character name, ignore $$ and stupid ones. */
|
||||
/* Probably a single character name, ignore $$ and stupid ones. {*/
|
||||
if (!short_var || strchr("}):$", ch) != NULL) {
|
||||
cp++;
|
||||
continue;
|
||||
|
@ -373,8 +411,7 @@ For_Run(int lineno)
|
|||
Buf_AddBytes(cmds, cp - cmd_cp, cmd_cp);
|
||||
Buf_AddBytes(cmds, 3, "{:U");
|
||||
cmd_cp = ++cp;
|
||||
item = strlist_str(&arg.items, num_items + i);
|
||||
Buf_AddBytes(cmds, strlen(item), item);
|
||||
for_substitute(cmds, &arg.items, num_items + i, /*{*/ '}');
|
||||
Buf_AddBytes(cmds, 1, "}");
|
||||
break;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue