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authorUlrich Drepper <drepper@redhat.com>1998-05-08 12:32:47 +0000
committerUlrich Drepper <drepper@redhat.com>1998-05-08 12:32:47 +0000
commitfab6d621377dcd0ace90066684cff09cb26ba725 (patch)
treeebb9ddc285c78bdfdccfa5ba33eba7a2e57d6cae /iconv
parentebcd12d4f11fac725e30b49a8dd1635ec0573eb5 (diff)
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Update.
1998-05-08 12:26 Ulrich Drepper <drepper@cygnus.com> * iconv/gconv_int.h (struct gconv_module): Remove cost field and add cost_hi and cost_lo. * iconv/gconv_conf.c (builtin_modules): Initialize cost_hi from Cost parameter and set cost_lo to INT_MAX. (add_module): Take new parameter and use it to initialize cost_lo. (read_conf_file): Count modules being loaded and use counter for new parameter to add_module. * iconv/gconv_db.c (find_derivation): When look for cost examine cost_hi and cost_lo. 1998-05-08 10:52 Ulrich Drepper <drepper@cygnus.com> * string/bits/string2.h: Don't use unsigned char * unless really necessary since this disturbs C++. * sysdeps/i386/i486/bits/string.h: Likewise. Patch by Bernd Schmidt <crux@Pool.Informatik.RWTH-Aachen.DE>. 1998-05-08 13:53 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> * malloc/malloc.c (top_check): Fix last change.
Diffstat (limited to 'iconv')
-rw-r--r--iconv/gconv_conf.c20
-rw-r--r--iconv/gconv_db.c15
-rw-r--r--iconv/gconv_int.h3
3 files changed, 24 insertions, 14 deletions
diff --git a/iconv/gconv_conf.c b/iconv/gconv_conf.c
index ae5ba19..6457e37 100644
--- a/iconv/gconv_conf.c
+++ b/iconv/gconv_conf.c
@@ -20,6 +20,7 @@
#include <ctype.h>
#include <errno.h>
+#include <limits.h>
#include <search.h>
#include <stdio.h>
#include <stdlib.h>
@@ -54,7 +55,8 @@ static struct gconv_module builtin_modules[] =
from_constpfx_len: ConstLen, \
from_regex: NULL, \
to_string: To, \
- cost: Cost, \
+ cost_hi: Cost, \
+ cost_lo: INT_MAX, \
module_name: Name \
},
#define BUILTIN_ALIAS(From, To)
@@ -151,7 +153,7 @@ add_alias (char *rp)
/* Add new module. */
static inline void
add_module (char *rp, const char *directory, size_t dir_len, void **modules,
- size_t *nmodules)
+ size_t *nmodules, int modcounter)
{
/* We expect now
1. `from' name
@@ -164,7 +166,7 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules,
size_t const_len;
int from_is_regex;
int need_ext;
- int cost;
+ int cost_hi;
while (isspace (*rp))
++rp;
@@ -198,7 +200,7 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules,
{
/* There is no cost, use one by default. */
*wp++ = '\0';
- cost = 1;
+ cost_hi = 1;
}
else
{
@@ -206,10 +208,10 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules,
char *endp;
*wp++ = '\0';
- cost = strtol (rp, &endp, 10);
+ cost_hi = strtol (rp, &endp, 10);
if (rp == endp)
/* No useful information. */
- cost = 1;
+ cost_hi = 1;
}
if (module[0] == '\0')
@@ -264,7 +266,8 @@ add_module (char *rp, const char *directory, size_t dir_len, void **modules,
new_module->to_string = memcpy ((char *) new_module->from_constpfx
+ (to - from), to, module - to);
- new_module->cost = cost;
+ new_module->cost_hi = cost_hi;
+ new_module->cost_lo = modcounter;
new_module->module_name = (char *) new_module->to_string + (module - to);
@@ -314,6 +317,7 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len,
FILE *fp = fopen (filename, "r");
char *line = NULL;
size_t line_len = 0;
+ int modcounter = 0;
/* Don't complain if a file is not present or readable, simply silently
ignore it. */
@@ -356,7 +360,7 @@ read_conf_file (const char *filename, const char *directory, size_t dir_len,
add_alias (rp);
else if (rp - word == sizeof ("module") - 1
&& memcmp (word, "module", sizeof ("module") - 1) == 0)
- add_module (rp, directory, dir_len, modules, nmodules);
+ add_module (rp, directory, dir_len, modules, nmodules, modcounter++);
/* else */
/* Otherwise ignore the line. */
}
diff --git a/iconv/gconv_db.c b/iconv/gconv_db.c
index 62d8f05..503c5d0c 100644
--- a/iconv/gconv_db.c
+++ b/iconv/gconv_db.c
@@ -261,7 +261,8 @@ find_derivation (const char *toset, const char *toset_expand,
{
__libc_lock_define_initialized (static, lock)
struct derivation_step *first, *current, **lastp, *best = NULL;
- int best_cost = 0;
+ int best_cost_hi = 0;
+ int best_cost_lo = 0;
int result;
result = derivation_lookup (fromset_expand ?: fromset, toset_expand ?: toset,
@@ -429,18 +430,22 @@ find_derivation (const char *toset, const char *toset_expand,
/* Determine the costs. If they are lower than the
previous solution (or this is the first solution)
remember this solution. */
- int cost = __gconv_modules_db[cnt]->cost;
+ int cost_hi = __gconv_modules_db[cnt]->cost_hi;
+ int cost_lo = __gconv_modules_db[cnt]->cost_lo;
struct derivation_step *runp = current;
while (runp->code != NULL)
{
- cost += runp->code->cost;
+ cost_hi += runp->code->cost_hi;
+ cost_lo += runp->code->cost_lo;
runp = runp->last;
}
- if (best == NULL || cost < best_cost)
+ if (best == NULL || cost_hi < best_cost_hi
+ || (cost_hi == best_cost_hi && cost_lo < best_cost_lo))
{
best = NEW_STEP (result_set, __gconv_modules_db[cnt],
current);
- best_cost = cost;
+ best_cost_hi = cost_hi;
+ best_cost_lo = cost_lo;
}
}
else
diff --git a/iconv/gconv_int.h b/iconv/gconv_int.h
index 80cced4..e4202f6 100644
--- a/iconv/gconv_int.h
+++ b/iconv/gconv_int.h
@@ -70,7 +70,8 @@ struct gconv_module
const char *to_string;
- int cost;
+ int cost_hi;
+ int cost_lo;
const char *module_name;
};