Mark Murray wrote:
>>These seem to be the same program. I'll take this if there are no
>>objections.
>
> You have it!
Okay, here's my vidfont/kbdmap rewrite for review. Any feedback
is welcome, the same goes for bug reports :-)
Cheers,
--Jon
http://www.witchspace.com
#include <sys/queue.h>
#include <sys/types.h>
#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stringlist.h>
#include <unistd.h>
static char *lang_default = "en";
static char *font;
static char *lang;
static const char *program;
static char *keymapdir = "/usr/share/syscons/keymaps";
static char *fontdir = "/usr/share/syscons/fonts";
static char *sysconfig = "/etc/rc.conf";
static char *font_default = "cp437-8x16.fnt";
static char *font_current;
static char *dir;
static const char *menu = "";
static int x11;
static int show;
static int verbose;
static int print;
struct keymap {
char *desc;
char *keym;
int mark;
SLIST_ENTRY(keymap) entries;
};
static SLIST_HEAD(slisthead, keymap) head = SLIST_HEAD_INITIALIZER(head);
/*
* Get keymap entry for 'key', or NULL of not found
*/
struct keymap *
get_keymap(const char *key)
{
struct keymap *km;
SLIST_FOREACH(km, &head, entries) {
if (!strcmp(km->keym, key)) {
return km;
}
}
return NULL;
}
/*
* Count the number of keymaps we found
*/
static int
get_num_keymaps(void)
{
struct keymap *km;
int count = 0;
SLIST_FOREACH(km, &head, entries) {
count++;
}
return count;
}
/*
* Remove any keymap with given keym
*/
static void
remove_keymap(const char *keym)
{
struct keymap *km;
SLIST_FOREACH(km, &head, entries) {
if (!strcmp(keym, km->keym)) {
SLIST_REMOVE(&head, km, keymap, entries);
free(km);
break;
}
}
}
/*
* Add to hash with 'key'
*/
void
add_keymap(const char *desc, int mark, const char *keym)
{
struct keymap *km, *km_new;
/* Is there already an entry with this key? */
SLIST_FOREACH(km, &head, entries) {
if (!strcmp(km->keym, keym)) {
/* Reuse this entry */
free(km->desc);
km->desc = strdup(desc);
km->mark = mark;
return;
}
}
km_new = (struct keymap *) malloc (sizeof(struct keymap));
km_new->desc = strdup(desc);
km_new->keym = strdup(keym);
km_new->mark = mark;
/* Add to keymap list */
SLIST_INSERT_HEAD(&head, km_new, entries);
}
/*
* Figure out the default language to use.
*/
static char *
get_locale(void)
{
char *locale;
locale = getenv("LC_ALL");
if (locale == NULL) {
locale = getenv("LC_CTYPE");
if (locale == NULL) {
locale = getenv("LANG");
if (locale == NULL) {
locale = lang_default;
}
}
}
/* Check for alias */
if (!strcmp(locale, "C")) {
locale = "en";
}
return locale;
}
/*
* Extract filename part
*/
static const char *
extract_name(char *name)
{
char *p;
p = strrchr(name, '/');
if (p != NULL && p[1] != '\0') {
return p + 1;
}
return name;
}
/*
* Return file extension or NULL
*/
static char *
get_extension(const char *name)
{
char *p;
p = strrchr(name, '.');
if (p != NULL && p[1] != '\0') {
return p;
}
return NULL;
}
/*
* Read font from /etc/rc.conf else return default.
* Freeing the memory is the caller's responsibility.
*/
static char *
get_font(void)
{
char line[256], buf[20];
char *font = NULL;
FILE *fp = fopen(sysconfig, "r");
if (fp) {
while (fgets(line, sizeof(line), fp)) {
int a, b, matches;
if (line[0] == '#') {
continue;
}
matches = sscanf(line, " font%dx%d = \"%20[-.0-9a-zA-Z_]", &a,
&b, buf);
if (matches==3) {
if (strcmp(buf, "NO")) {
if (font) {
free(font);
}
font = (char *) malloc(strlen(buf) + 1);
strcpy(font, buf);
}
}
}
} else {
printf("Could not open %s for reading\n", sysconfig);
}
return font;
}
/*
* Set a font using 'vidcontrol'
*/
static void
vidcontrol(const char *font)
{
char *tmp, *p, *q, *cmd;
char ch;
int i;
/* syscons test failed */
if (x11) {
return;
}
tmp = strdup(font);
/* Extract font size */
p = strrchr(tmp, '-');
if (p[1] != '\0') {
p++;
/* Remove any '.fnt' extension */
if ((q = strstr(p, ".fnt"))) {
*q = '\0';
}
/* Check font size is valid, with no trailing characters */
if (sscanf(p, "%dx%d%c", &i, &i, &ch) != 2) {
fprintf(stderr, "Which font size? %s\n", font);
} else {
asprintf(&cmd, "vidcontrol -f %s %s", p, font);
if (verbose) {
fprintf(stderr, "%s\n", cmd);
}
system(cmd);
free(cmd);
}
}
free(tmp);
}
/*
* Display dialog from 'keymaps[]'
*/
void
dialog(struct keymap **km_sorted, int num_keymaps)
{
FILE *fp;
char *cmd, *dialog;
char tmp_name[] = "/tmp/_kbd_lang.XXXX";
const char *ext;
int i, size;
mktemp(tmp_name);
asprintf(&dialog, "/usr/bin/dialog --clear --title \"Keyboard Menu\" --menu
\"%s\" -1 -1 10", menu);
ext = extract_name(dir);
/* start right font, assume that current font is equal
* to default font in /etc/rc.conf
*
* $font is the font which require the language $lang; e.g.
* russian *need* a koi8 font
* $font_current is the current font from /etc/rc.conf
*/
if (font && strcmp(font, font_current)) {
vidcontrol(font);
}
/* Build up the command */
size = 0;
for (i=0; i<num_keymaps; i++) {
/* Each 'font' is passed as ' "font" ""', so allow the extra space */
size += strlen(km_sorted[i]->desc) + 6;
}
/* Allow the space for '2> tmpfilename' redirection */
size += strlen(tmp_name + 3);
cmd = (char *) malloc(strlen(dialog) + size + 1);
strcpy(cmd, dialog);
for (i=0; i<num_keymaps; i++) {
strcat(cmd, " \"");
strcat(cmd, km_sorted[i]->desc);
strcat(cmd, "\"");
strcat(cmd, " \"\"");
}
strcat(cmd, " 2>");
strcat(cmd, tmp_name);
/* Show the dialog.. */
system(cmd);
fp = fopen(tmp_name, "r");
if (fp) {
char choice[32];
if (fgets(choice, 32, fp) != NULL) {
/* Find key for desc */
for (i=0; i<num_keymaps; i++) {
if (!strcmp(choice, km_sorted[i]->desc)) {
printf("program = %s\n", program);
if (!strcmp(program, "kbdmap")) {
char *cmd;
asprintf(&cmd, "kbdcontrol -l %s/%s",
dir, km_sorted[i]->keym);
system(cmd);
free(cmd);
} else {
char *cmd;
asprintf(&cmd, "%s/%s", dir,
km_sorted[i]->keym);
vidcontrol(cmd);
free(cmd);
}
break;
}
}
} else {
if (font != NULL && strcmp(font, font_current)) {
/* Cancelled, restore old font */
vidcontrol(font_current);
}
}
fclose(fp);
} else {
fprintf(stderr, "Failed to open temporary file");
}
/* Tidy up */
remove(tmp_name);
free(cmd);
free(dialog);
}
/*
* Search for 'token' in comma delimited array 'buffer'.
* Return true for found, false for not found.
*/
static int
find_token(const char *buffer, const char *token)
{
char *buffer_tmp, *buffer_copy, *inputstring;
char **ap;
int found;
buffer_copy = strdup(buffer);
buffer_tmp = buffer_copy;
inputstring = buffer_copy;
ap = &buffer_tmp;
found = 0;
while ((*ap = strsep(&inputstring, ",")) != NULL) {
if (strcmp(buffer_tmp, token) == 0) {
found = 1;
break;
}
}
free(buffer_copy);
return found;
}
/*
* Compare function for qsort
*/
static int
compare_keymap(const void *a, const void *b)
{
/* We've been passed pointers to pointers, so: */
struct keymap *km1 = *((struct keymap **) a);
struct keymap *km2 = *((struct keymap **) b);
return strcmp(km1->desc, km2->desc);
}
/*
* Compare function for qsort
*/
static int
compare_lang(const void *a, const void *b)
{
char *l1 = *((char **) a);
char *l2 = *((char **) b);
return strcmp(l1, l2);
}
/*
* Change '8x8' to '8x08' so qsort will put it before eg. '8x14'
*/
static void
kludge_desc(struct keymap **km_sorted, int num_keymaps)
{
int i;
for (i=0; i<num_keymaps; i++) {
char *p;
char *km = km_sorted[i]->desc;
if ((p = strstr(km, "8x8")) != NULL) {
int len;
int j;
int offset;
offset = p - km;
/* Make enough space for the extra '0 */
len = strlen(km);
km = realloc(km, len + 2);
for (j=len; j!=offset+1; j--) {
km[j + 1] = km[j];
}
km[offset+2] = '0';
km_sorted[i]->desc = km;
}
}
}
/*
* Reverse 'kludge_desc()' - change '8x08' back to '8x8'
*/
static void
unkludge_desc(struct keymap **km_sorted, int num_keymaps)
{
int i;
for (i=0; i<num_keymaps; i++) {
char *p;
char *km = km_sorted[i]->desc;
if ((p = strstr(km, "8x08")) != NULL) {
p += 2;
while (*p++) {
p[-1] = p[0];
}
km = realloc(km, p - km - 1);
km_sorted[i]->desc = km;
}
}
}
/*
* Read options from the relevent configuration file, then
* present to user.
*/
static void
menu_read(void)
{
char *lg, *p;
int mark, num_keymaps, items, i;
char buffer[256], filename[256];
char keym[64], lng[64], desc[64];
char dialect[64], lang_abk[64];
struct keymap *km;
struct keymap **km_sorted;
StringList *lang_list;
struct dirent *dp;
FILE *fp;
DIR *dirp;
lang_list = sl_init();
sprintf(filename, "%s/INDEX.%s", dir, extract_name(dir));
/* en_US.ISO8859-1 -> en_..\.ISO8859-1 */
strcpy(dialect, lang);
if (strlen(dialect) >= 6 && dialect[2] == '-') {
dialect[3] = '.';
dialect[4] = '.';
}
/* en_US.ISO8859-1 -> en */
strcpy(lang_abk, lang);
if (strlen(lang_abk) >= 3 && lang_abk[2] == '-') {
lang_abk[2] = '.';
}
fp = fopen(filename, "r");
if (fp) {
int matches;
while (fgets(buffer, sizeof(buffer), fp)) {
p = buffer;
if (p[0] == '#') {
continue;
}
while (isspace(*p)) {
p++;
}
if (*p == '\0') {
continue;
}
/* Parse input, removing newline */
matches = sscanf(p, "%64[^:]:%64[^:]:%64[^:\n]", keym, lng,
desc);
if (matches == 3) {
if (strcmp(keym, "FONT") && strcmp(keym, "MENU")) {
/* Check file is readable */
if (access(keym, R_OK) == -1) {
sprintf(filename, "%s/%s", dir, keym);
if (access(filename, R_OK) == -1) {
fprintf(stderr, "%s not
found\n", filename);
if (verbose) {
fprintf(stderr, "%s
not found!\n", keym);
}
continue;
}
} else if (verbose) {
fprintf(stderr, "No read permission
for %s!\n", keym);
}
}
}
if (show) {
/* Take note of supported languages, which might be in
a
* comma-delimited list */
char *tmp = strdup(lng);
char *delim = tmp;
for (delim = tmp; ; ) {
char ch = *delim++;
if (ch == ',' || ch == '\0') {
delim[-1] = '\0';
if (!sl_find(lang_list, tmp)) {
sl_add(lang_list, tmp);
}
if (ch == '\0') {
break;
}
tmp = delim;
}
}
}
/* Set empty language to default language */
if (lng[0] == '\0') {
lg = lang_default;
} else {
lg = lng;
}
/* 4) Your choice if it exists
* 3) Long match eg. en_GB.ISO8859-1 is equal to
en_..\.ISO8859-1
* 2) short match 'de'
* 1) default langlist 'en'
* 0) any language
*
* Language may be a comma separated list
* A higher match overwrites a lower
* A later entry overwrites a previous if it exists twice in
the database
*/
/* Check for favoured language */
km = get_keymap(keym);
mark = (km) ? mark = km->mark : 0;
if (find_token(lg, lang)) {
add_keymap(desc, 4, keym);
} else if (mark <= 3 && find_token(lg, dialect)) {
add_keymap(desc, 3, keym);
} else if (mark <= 2 && find_token(lg, lang_abk)) {
add_keymap(desc, 2, keym);
} else if (mark <= 1 && find_token(lg, lang_default)) {
add_keymap(desc, 1, keym);
} else if (mark <= 0) {
add_keymap(desc, 0, keym);
}
}
fclose(fp);
} else {
fprintf(stderr, "Could not open file\n");
}
if (show) {
qsort(lang_list->sl_str, lang_list->sl_cur, sizeof(char*),
compare_lang);
printf("Currently supported languages: ");
for (i=0; i<lang_list->sl_cur; i++) {
printf("%s ", lang_list->sl_str[i]);
}
puts("");
exit(0);
}
km = get_keymap("MENU");
if (km) {
/* Take note of menu title */
menu = strdup(km->desc);
}
km = get_keymap("FONT");
if (km) {
/* Take note of language font */
font = strdup(km->desc);
}
/* Remove unwanted items from list */
remove_keymap("MENU");
remove_keymap("FONT");
/* Look for keymaps not in database */
dirp = opendir(dir);
if (dirp) {
while ((dp = readdir(dirp)) != NULL) {
const char *p = get_extension(dp->d_name);
if (p) {
if ((!strcmp(p, ".fnt") || !strcmp(p, ".kbd")) &&
!get_keymap(dp->d_name)) {
char *q;
/* Remove any .fnt or .kbd extension */
q = strdup(dp->d_name);
*(get_extension(q)) = '\0';
add_keymap(q, 0, dp->d_name);
free(q);
if (verbose) {
fprintf(stderr, "'%s' not in
database\n", dp->d_name);
}
}
}
}
closedir(dirp);
} else {
fprintf(stderr, "Could not open directory '%s'\n", dir);
}
/* Sort items in keymap */
num_keymaps = get_num_keymaps();
km_sorted = (struct keymap **) malloc(num_keymaps*sizeof(struct keymap *));
/* Make array of pointers to items in hash */
items = 0;
SLIST_FOREACH(km, &head, entries) {
km_sorted[items++] = km;
}
/* Change '8x8' to '8x08' so sort works as we might expect... */
kludge_desc(km_sorted, num_keymaps);
qsort(km_sorted, num_keymaps, sizeof(struct keymap *), compare_keymap);
/* ...change back again */
unkludge_desc(km_sorted, num_keymaps);
if (print) {
for (i=0; i<num_keymaps; i++) {
printf("%s\n", km_sorted[i]->desc);
}
exit(0);
}
dialog(km_sorted, num_keymaps);
free(km_sorted);
}
/*
* Display usage information and exit
*/
static void
usage(void)
{
fprintf(stderr, "usage: %s\t[-K] [-V] [-d|-default] [-h|-help] [-l|-lang
language]\n"
"\t\t[-p|-print] [-r|-restore] [-s|-show] [-v|-verbose]\n", program);
exit(1);
}
static void
parse_args(int argc, char **argv)
{
int i;
for (i=1; i<argc; i++) {
if (argv[i][0] != '-') {
usage();
} else if (!strcmp(argv[i], "-help") || !strcmp(argv[i], "-h")) {
usage();
} else if (!strcmp(argv[i], "-verbose") || !strcmp(argv[i], "-v")) {
verbose = 1;
} else if (!strcmp(argv[i], "-lang") || !strcmp(argv[i], "-l")) {
if (i + 1 == argc) {
usage();
} else {
lang = argv[++i];
}
} else if (!strcmp(argv[i], "-default") || !strcmp(argv[i], "-d")) {
lang = lang_default;
} else if (!strcmp(argv[i], "-show") || !strcmp(argv[i], "-s")) {
show = 1;
} else if (!strcmp(argv[i], "-print") || !strcmp(argv[i], "-p")) {
print = 1;
} else if (!strcmp(argv[i], "-restore") || !strcmp(argv[i], "-r")) {
vidcontrol(font_current);
exit(0);
} else if (!strcmp(argv[i], "-K")) {
dir = keymapdir;
} else if (!strcmp(argv[i], "-V")) {
dir = fontdir;
} else {
usage();
}
}
}
/*
* A front-end for the 'vidfont' and 'kbdmap' programs.
*/
int
main(int argc, char **argv)
{
/* Are we on a virtual terminal? */
x11 = system("kbdcontrol -d >/dev/null");
if (x11) {
fprintf(stderr, "You are not on a virtual console - "
"expect certain strange side-effects\n");
sleep(2);
}
SLIST_INIT(&head);
lang = get_locale();
program = extract_name(argv[0]);
/* Parse command line arguments */
parse_args(argc, argv);
font_current = get_font();
if (font_current == NULL) {
font_current = font_default;
}
if (strcmp(program, "kbdmap")) {
dir = fontdir;
} else {
dir = keymapdir;
}
/* Read and display options */
menu_read();
return 0;
}
