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Bash-4.3 distribution sources and documentation

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This commit is contained in:
Chet Ramey 2014-02-26 09:36:43 -05:00
commit ac50fbac37
497 changed files with 129395 additions and 87598 deletions
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109
lib/sh/shquote.c
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@ -32,6 +32,50 @@
#include "syntax.h"
#include <xmalloc.h>
/* Default set of characters that should be backslash-quoted in strings */
static const char bstab[256] =
{
0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 0, 0, 0, 0, 0, /* TAB, NL */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 0, 1, 0, 1, 1, /* SPACE, !, DQUOTE, DOL, AMP, SQUOTE */
1, 1, 1, 0, 1, 0, 0, 0, /* LPAR, RPAR, STAR, COMMA */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 0, 1, 1, /* SEMI, LESSTHAN, GREATERTHAN, QUEST */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 1, 0, /* LBRACK, BS, RBRACK, CARAT */
1, 0, 0, 0, 0, 0, 0, 0, /* BACKQ */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 1, 1, 1, 0, 0, /* LBRACE, BAR, RBRACE */
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0,
};
/* **************************************************************** */
/* */
/* Functions for quoting strings to be re-read as input */
@ -50,6 +94,15 @@ sh_single_quote (string)
result = (char *)xmalloc (3 + (4 * strlen (string)));
r = result;
if (string[0] == '\'' && string[1] == 0)
{
*r++ = '\\';
*r++ = '\'';
*r++ = 0;
return result;
}
*r++ = '\'';
for (s = string; s && (c = *s); s++)
@ -163,53 +216,33 @@ sh_un_double_quote (string)
way to protect the CTLESC and CTLNUL characters. As I write this,
the current callers will never cause the string to be expanded without
going through the shell parser, which will protect the internal
quoting characters. */
quoting characters. TABLE, if set, points to a map of the ascii code
set with char needing to be backslash-quoted if table[char]==1. FLAGS,
if 1, causes tildes to be quoted as well. */
char *
sh_backslash_quote (string)
sh_backslash_quote (string, table, flags)
char *string;
char *table;
int flags;
{
int c;
char *result, *r, *s;
char *result, *r, *s, *backslash_table;
result = (char *)xmalloc (2 * strlen (string) + 1);
backslash_table = table ? table : (char *)bstab;
for (r = result, s = string; s && (c = *s); s++)
{
switch (c)
{
case ' ': case '\t': case '\n': /* IFS white space */
case '\'': case '"': case '\\': /* quoting chars */
case '|': case '&': case ';': /* shell metacharacters */
case '(': case ')': case '<': case '>':
case '!': case '{': case '}': /* reserved words */
case '*': case '[': case '?': case ']': /* globbing chars */
case '^':
case '$': case '`': /* expansion chars */
case ',': /* brace expansion */
*r++ = '\\';
*r++ = c;
break;
#if 0
case '~': /* tilde expansion */
if (s == string || s[-1] == '=' || s[-1] == ':')
*r++ = '\\';
*r++ = c;
break;
case CTLESC: case CTLNUL: /* internal quoting characters */
*r++ = CTLESC; /* could be '\\'? */
*r++ = c;
break;
#endif
case '#': /* comment char */
if (s == string)
*r++ = '\\';
/* FALLTHROUGH */
default:
*r++ = c;
break;
}
if (backslash_table[c] == 1)
*r++ = '\\';
else if (c == '#' && s == string) /* comment char */
*r++ = '\\';
else if ((flags&1) && c == '~' && (s == string || s[-1] == ':' || s[-1] == '='))
/* Tildes are special at the start of a word or after a `:' or `='
(technically unquoted, but it doesn't make a difference in practice) */
*r++ = '\\';
*r++ = c;
}
*r = '\0';