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Support of disable of shell variables substitution in the command line.

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Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin 2011-10-12 16:16:43 +04:00
parent e2c5363eb9
commit 1233059de6
1 changed files with 57 additions and 30 deletions
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87
src/filemanager/command.c
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@ -83,6 +83,9 @@ WInput *cmdline;
static gboolean
examine_cd (const char *_path)
{
typedef enum { copy_sym, subst_var } state_t;
state_t state = copy_sym;
gboolean result;
size_t qlen;
char *path_tilde, *path;
@ -100,44 +103,68 @@ examine_cd (const char *_path)
/* Variable expansion */
for (p = path_tilde, r = q; *p != '\0' && r < q + MC_MAXPATHLEN;)
{
if (*p != '$' || (p[1] == '[' || p[1] == '('))
*(r++) = *(p++);
else
switch (state)
{
const char *t;
p++;
if (*p == '{')
case copy_sym:
if (p[0] == '\\' && p[1] == '$')
{
/* skip backslash */
p++;
s = strchr (p, '}');
/* copy dollar */
*(r++) = *(p++);
}
else if (p[0] != '$' || p[1] == '[' || p[1] == '(')
*(r++) = *(p++);
else
s = NULL;
if (s == NULL)
s = strchr (p, PATH_SEP);
if (s == NULL)
s = strchr (p, '\0');
c = *s;
*s = '\0';
t = getenv (p);
*s = c;
if (t == NULL)
state = subst_var;
break;
case subst_var:
{
*(r++) = '$';
if (*(p - 1) != '$')
*(r++) = '{';
}
else
{
if (r + strlen (t) < q + MC_MAXPATHLEN)
const char *t;
/* skip dollar */
p++;
if (p[0] != '{')
s = NULL;
else
{
strcpy (r, t);
r = strchr (r, '\0');
}
p = s;
if (*s == '}')
p++;
s = strchr (p, '}');
}
if (s == NULL)
s = strchr (p, PATH_SEP);
if (s == NULL)
s = strchr (p, '\0');
c = *s;
*s = '\0';
t = getenv (p);
*s = c;
if (t == NULL)
{
*(r++) = '$';
if (p[-1] != '$')
*(r++) = '{';
}
else
{
size_t tlen;
tlen = strlen (t);
if (r + tlen < q + MC_MAXPATHLEN)
{
strncpy (r, t, tlen + 1);
r += tlen;
}
p = s;
if (*s == '}')
p++;
}
state = copy_sym;
break;
}
}
}