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-rw-r--r--shell/hush.c50
1 files changed, 25 insertions, 25 deletions
diff --git a/shell/hush.c b/shell/hush.c
index 87e003d..e49c0c9 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -71,7 +71,7 @@
* memory leak finding and plugging - done?
* more testing, especially quoting rules and redirection
* document how quoting rules not precisely followed for variable assignments
- * maybe change map[] to use 2-bit entries
+ * maybe change charmap[] to use 2-bit entries
* (eventually) remove all the printf's
*
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
@@ -281,12 +281,12 @@ extern char **environ; /* This is in <unistd.h>, but protected with __USE_GNU */
/* "globals" within this file */
enum {
- MAP_ORDINARY = 0,
- MAP_FLOWTROUGH_IF_QUOTED = 1,
- MAP_IFS_IF_UNQUOTED = 2, /* flow through if quoted too */
- MAP_NEVER_FLOWTROUGH = 3,
+ CHAR_ORDINARY = 0,
+ CHAR_ORDINARY_IF_QUOTED = 1, /* example: *, # */
+ CHAR_IFS = 2, /* treated as ordinary if quoted */
+ CHAR_SPECIAL = 3, /* example: $ */
};
-static unsigned char map[256];
+static unsigned char charmap[256];
static const char *ifs;
static int fake_mode;
static struct close_me *close_me_head;
@@ -2311,7 +2311,7 @@ static int xglob(o_string *dest, int flags, glob_t *pglob)
* Caller can deallocate entire list by single free(list). */
/* Helpers first:
- * count_XXX estimates, how large block do we need. It's okay
+ * count_XXX estimates size of the block we need. It's okay
* to over-estimate sizes a bit, if it makes code simpler */
static int count_ifs(const char *str)
{
@@ -3360,17 +3360,17 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
debug_printf_parse("parse_stream entered, end_trigger='%s'\n", end_trigger);
while ((ch = b_getch(input)) != EOF) {
- m = map[ch];
+ m = charmap[ch];
next = (ch == '\n') ? '\0' : b_peek(input);
debug_printf_parse(": ch=%c (%d) m=%d quote=%d\n",
ch, ch, m, dest->quote);
- if (m == MAP_ORDINARY
- || (m != MAP_NEVER_FLOWTROUGH && dest->quote)
+ if (m == CHAR_ORDINARY
+ || (m != CHAR_SPECIAL && dest->quote)
) {
b_addqchr(dest, ch, dest->quote);
continue;
}
- if (m == MAP_IFS_IF_UNQUOTED) {
+ if (m == CHAR_IFS) {
if (done_word(dest, ctx)) {
debug_printf_parse("parse_stream return 1: done_word!=0\n");
return 1;
@@ -3388,7 +3388,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
debug_printf_parse("parse_stream return 0: end_trigger char found\n");
return 0;
}
- if (m == MAP_IFS_IF_UNQUOTED)
+ if (m == CHAR_IFS)
continue;
switch (ch) {
case '#':
@@ -3527,28 +3527,28 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
return 0;
}
-static void mapset(const char *set, int code)
+static void set_in_charmap(const char *set, int code)
{
while (*set)
- map[(unsigned char)*set++] = code;
+ charmap[(unsigned char)*set++] = code;
}
-static void update_ifs_map(void)
+static void update_charmap(void)
{
- /* char *ifs and char map[256] are both globals. */
+ /* char *ifs and char charmap[256] are both globals. */
ifs = getenv("IFS");
if (ifs == NULL)
ifs = " \t\n";
/* Precompute a list of 'flow through' behavior so it can be treated
* quickly up front. Computation is necessary because of IFS.
* Special case handling of IFS == " \t\n" is not implemented.
- * The map[] array only really needs two bits each, and on most machines
- * that would be faster because of the reduced L1 cache footprint.
+ * The charmap[] array only really needs two bits each,
+ * and on most machines that would be faster (reduced L1 cache use).
*/
- memset(map, MAP_ORDINARY, sizeof(map)); /* most chars flow through always */
- mapset("\\$'\"`", MAP_NEVER_FLOWTROUGH);
- mapset("<>;&|(){}#", MAP_FLOWTROUGH_IF_QUOTED);
- mapset(ifs, MAP_IFS_IF_UNQUOTED); /* also flow through if quoted */
+ memset(charmap, CHAR_ORDINARY, sizeof(charmap));
+ set_in_charmap("\\$\"`", CHAR_SPECIAL);
+ set_in_charmap("<>;&|(){}#'", CHAR_ORDINARY_IF_QUOTED);
+ set_in_charmap(ifs, CHAR_IFS); /* also flow through if quoted */
}
/* most recursion does not come through here, the exception is
@@ -3561,9 +3561,9 @@ static int parse_stream_outer(struct in_str *inp, int parse_flag)
do {
ctx.parse_type = parse_flag;
initialize_context(&ctx);
- update_ifs_map();
+ update_charmap();
if (!(parse_flag & FLAG_PARSE_SEMICOLON) || (parse_flag & FLAG_REPARSING))
- mapset(";$&|", MAP_ORDINARY);
+ set_in_charmap(";$&|", CHAR_ORDINARY);
#if ENABLE_HUSH_INTERACTIVE
inp->promptmode = 1;
#endif
@@ -3665,7 +3665,7 @@ int hush_main(int argc, char **argv)
* hush_main(), therefore we cannot rely on the BSS to zero out this
* stuff. Reset these to 0 every time. */
ifs = NULL;
- /* map[] is taken care of with call to update_ifs_map() */
+ /* charmap[] is taken care of with call to update_charmap() */
fake_mode = 0;
close_me_head = NULL;
#if ENABLE_HUSH_INTERACTIVE