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author | Mystery Man <unknown@mandriva.org> | 2002-07-23 11:21:56 +0000 |
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committer | Mystery Man <unknown@mandriva.org> | 2002-07-23 11:21:56 +0000 |
commit | 0a94f3feb8d7841fe8212febcbbdac1073413e05 (patch) | |
tree | 09f4686118e32ec13377577bbbd0f08e8120836c /mdk-stage1/slang/slkeymap.c | |
parent | 127a73d935d78af53d3dadd05d4636f6b717976d (diff) | |
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This commit was manufactured by cvs2svn to create tag 'V1_1_8_14mdk'.V1_1_8_14mdk
Diffstat (limited to 'mdk-stage1/slang/slkeymap.c')
-rw-r--r-- | mdk-stage1/slang/slkeymap.c | 596 |
1 files changed, 0 insertions, 596 deletions
diff --git a/mdk-stage1/slang/slkeymap.c b/mdk-stage1/slang/slkeymap.c deleted file mode 100644 index dff65433e..000000000 --- a/mdk-stage1/slang/slkeymap.c +++ /dev/null @@ -1,596 +0,0 @@ -/* Keymap routines for SLang. The role of these keymap routines is simple: - * Just read keys from the tty and return a pointer to a keymap structure. - * That is, a keymap is simple a mapping of strings (keys from tty) to - * structures. Also included are routines for managing the keymaps. - */ -/* Copyright (c) 1992, 1999, 2001 John E. Davis - * This file is part of the S-Lang library. - * - * You may distribute under the terms of either the GNU General Public - * License or the Perl Artistic License. - */ - -#include "slinclud.h" - -#include "slang.h" -#include "_slang.h" - -/* We need a define a rule for upperand lower case chars that user cannot - change! This could be a problem for international chars! */ - -#define UPPER_CASE_KEY(x) (((x) >= 'a') && ((x) <= 'z') ? (x) - 32 : (x)) -#define LOWER_CASE_KEY(x) (((x) >= 'A') && ((x) <= 'Z') ? (x) + 32 : (x)) - -int SLang_Key_TimeOut_Flag = 0; /* true if more than 1 sec has elapsed - without key in multikey sequence */ - -int SLang_Last_Key_Char; - -SLKeyMap_List_Type SLKeyMap_List[SLANG_MAX_KEYMAPS]; - -static SLang_Key_Type *malloc_key(unsigned char *str) -{ - SLang_Key_Type *neew; - - if (NULL == (neew = (SLang_Key_Type *) SLmalloc(sizeof(SLang_Key_Type)))) - return NULL; - - SLMEMSET ((char *) neew, 0, sizeof (SLang_Key_Type)); - SLMEMCPY((char *) neew->str, (char *) str, (unsigned int) *str); - return(neew); -} - -static SLKeyMap_List_Type *add_keymap (char *name, SLang_Key_Type *map) -{ - int i; - - for (i = 0; i < SLANG_MAX_KEYMAPS; i++) - { - if (SLKeyMap_List[i].keymap == NULL) - { - if (NULL == (name = SLang_create_slstring (name))) - return NULL; - - SLKeyMap_List[i].keymap = map; - SLKeyMap_List[i].name = name; - return &SLKeyMap_List[i]; - } - } - SLang_Error = SL_UNKNOWN_ERROR; - /* SLang_doerror ("Keymap quota exceeded."); */ - return NULL; -} - -FVOID_STAR SLang_find_key_function(char *name, SLKeyMap_List_Type *keymap) -{ - SLKeymap_Function_Type *fp = keymap -> functions; - char ch = *name; - - while ((fp != NULL) && (fp->name != NULL)) - { - if ((ch == *fp->name) - && (0 == strcmp(fp->name, name))) - return (FVOID_STAR) fp->f; - - fp++; - } - return NULL; -} - -#ifdef REAL_UNIX_SYSTEM -/* Expand termcap string specified by s. s as passed will have the format: - * "XY)..." where XY represents a termcap keyname. - */ -static char *process_termcap_string (char *s, char *str, int *ip, int imax) -{ - char c[3], *val; - int i; - - if ((0 == (c[0] = s[0])) - || (0 == (c[1] = s[1])) - || (s[2] != ')')) - { - SLang_verror (SL_SYNTAX_ERROR, "setkey: ^(%s is badly formed", s); - return NULL; - } - s += 3; - - c[2] = 0; - if ((NULL == (val = SLtt_tgetstr (c))) - || (*val == 0)) - return NULL; - - i = *ip; - while ((i < imax) && (*val != 0)) - { - str[i++] = *val++; - } - *ip = i; - - return s; -} -#endif - -/* convert things like "^A" to 1 etc... The 0th char is the strlen INCLUDING - * the length character itself. - */ -char *SLang_process_keystring(char *s) -{ - /* FIXME: v2.0, make this thread safe */ - static char str[32]; - unsigned char ch; - int i; - - i = 1; - while (*s != 0) - { - ch = (unsigned char) *s++; - if (ch == '^') - { - ch = *s++; - if (ch == 0) - { - if (i < 32) - str[i++] = '^'; - break; - } -#ifdef REAL_UNIX_SYSTEM - if (ch == '(') - { - s = process_termcap_string (s, str, &i, 32); - if (s == NULL) - { - str[0] = 1; - return str; - } - continue; - } -#endif - ch = UPPER_CASE_KEY(ch); - if (ch == '?') ch = 127; else ch = ch - 'A' + 1; - } - - if (i >= 32) break; - str[i++] = ch; - } - - if (i > SLANG_MAX_KEYMAP_KEY_SEQ) - { - SLang_verror (SL_INVALID_PARM, "Key sequence is too long"); - return NULL; - } - - str[0] = i; - return(str); -} - -static int key_string_compare (unsigned char *a, unsigned char *b, unsigned int len) -{ - unsigned char *amax = a + len; - int cha, chb, cha_up, chb_up; - - while (a < amax) - { - cha = *a++; - chb = *b++; - - if (cha == chb) continue; - - cha_up = UPPER_CASE_KEY(cha); - chb_up = UPPER_CASE_KEY(chb); - - if (cha_up == chb_up) - { - /* Use case-sensitive result. */ - return cha - chb; - } - /* Use case-insensitive result. */ - return cha_up - chb_up; - } - return 0; -} - -static char *Define_Key_Error = "Inconsistency in define key."; - -/* This function also performs an insertion in an ordered way. */ -static int find_the_key (char *s, SLKeyMap_List_Type *kml, SLang_Key_Type **keyp) -{ - unsigned char ch; - unsigned int str_len; - SLang_Key_Type *key, *last, *neew; - unsigned char *str; - - *keyp = NULL; - - if (NULL == (str = (unsigned char *) SLang_process_keystring(s))) - return -2; - - if (1 == (str_len = str[0])) - return 0; - - ch = str[1]; - key = kml->keymap + ch; - - if (str_len == 2) - { - if (key->next != NULL) - { - SLang_doerror (Define_Key_Error); - return -2; - } - - if (key->type == SLKEY_F_INTERPRET) - SLang_free_slstring (key->f.s); - - key->str[0] = str_len; - key->str[1] = ch; - - *keyp = key; - return 0; - } - - /* insert the key definition */ - while (1) - { - int cmp; - unsigned int key_len, len; - - last = key; - key = key->next; - - if ((key != NULL) && (key->str != NULL)) - { - len = key_len = key->str[0]; - if (len > str_len) len = str_len; - - cmp = key_string_compare (str + 1, key->str + 1, len - 1); - - if (cmp > 0) - continue; - - if (cmp == 0) - { - if (key_len != str_len) - { - SLang_doerror (Define_Key_Error); - return -2; - } - - if (key->type == SLKEY_F_INTERPRET) - SLang_free_slstring (key->f.s); - - *keyp = key; - return 0; - } - /* Drop to cmp < 0 case */ - } - - if (NULL == (neew = malloc_key(str))) return -1; - - neew -> next = key; - last -> next = neew; - - *keyp = neew; - return 0; - } -} - -/* returns -2 if inconsistent, -1 if malloc error, 0 upon success */ -int SLkm_define_key (char *s, FVOID_STAR f, SLKeyMap_List_Type *kml) -{ - SLang_Key_Type *key; - unsigned int type = SLKEY_F_INTRINSIC; - int ret; - - ret = find_the_key (s, kml, &key); - if ((ret != 0) || (key == NULL)) - return ret; - - key->type = type; - key->f.f = f; - return 0; -} - -int SLang_define_key (char *s, char *funct, SLKeyMap_List_Type *kml) -{ - SLang_Key_Type *key; - FVOID_STAR f; - int ret; - - ret = find_the_key (s, kml, &key); - if ((ret != 0) || (key == NULL)) - return ret; - - f = SLang_find_key_function(funct, kml); - - if (f == NULL) /* assume interpreted */ - { - char *str = SLang_create_slstring (funct); - if (str == NULL) return -1; - key->type = SLKEY_F_INTERPRET; - key->f.s = str; - } - else - { - key->type = SLKEY_F_INTRINSIC; - key->f.f = f; - } - return 0; -} - -int SLkm_define_keysym (char *s, unsigned int keysym, SLKeyMap_List_Type *kml) -{ - SLang_Key_Type *key; - int ret; - - ret = find_the_key (s, kml, &key); - - if ((ret != 0) || (key == NULL)) - return ret; - - key->type = SLKEY_F_KEYSYM; - key->f.keysym = keysym; - return 0; -} - -SLang_Key_Type *SLang_do_key(SLKeyMap_List_Type *kml, int (*getkey)(void)) -{ - register SLang_Key_Type *key, *next, *kmax; - unsigned int len; - unsigned char input_ch; - register unsigned char chup, chlow; - unsigned char key_ch = 0; - - SLang_Last_Key_Char = (*getkey)(); - SLang_Key_TimeOut_Flag = 0; - - if (SLANG_GETKEY_ERROR == (unsigned int) SLang_Last_Key_Char) - return NULL; - - input_ch = (unsigned char) SLang_Last_Key_Char; - - key = (SLang_Key_Type *) &((kml->keymap)[input_ch]); - - /* if the next one is null, then we know this MAY be it. */ - while (key->next == NULL) - { - if (key->type != 0) - return key; - - /* Try its opposite case counterpart */ - chlow = LOWER_CASE_KEY(input_ch); - if (input_ch == chlow) - input_ch = UPPER_CASE_KEY(input_ch); - - key = kml->keymap + input_ch; - if (key->type == 0) - return NULL; - } - - /* It appears to be a prefix character in a key sequence. */ - - len = 1; /* already read one character */ - key = key->next; /* Now we are in the key list */ - kmax = NULL; /* set to end of list */ - - while (1) - { - SLang_Key_TimeOut_Flag = 1; - SLang_Last_Key_Char = (*getkey)(); - SLang_Key_TimeOut_Flag = 0; - - len++; - - if ((SLANG_GETKEY_ERROR == (unsigned int) SLang_Last_Key_Char) - || SLKeyBoard_Quit) - break; - - input_ch = (unsigned char) SLang_Last_Key_Char; - - chup = UPPER_CASE_KEY(input_ch); chlow = LOWER_CASE_KEY(input_ch); - - while (key != kmax) - { - if (key->str[0] > len) - { - key_ch = key->str[len]; - if (chup == UPPER_CASE_KEY(key_ch)) - break; - } - key = key->next; - } - - if (key == kmax) break; - - /* If the input character is lowercase, check to see if there is - * a lowercase match. If so, set key to it. Note: the - * algorithm assumes the sorting performed by key_string_compare. - */ - if (input_ch != key_ch) - { - next = key->next; - while (next != kmax) - { - if (next->str[0] > len) - { - unsigned char next_ch = next->str[len]; - if (next_ch == input_ch) - { - key = next; - break; - } - if (next_ch != chup) - break; - } - next = next->next; - } - } - - /* Ok, we found the first position of a possible match. If it - * is exact, we are done. - */ - if ((unsigned int) key->str[0] == len + 1) - return key; - - /* Apparantly, there are some ambiguities. Read next key to resolve - * the ambiguity. Adjust kmax to encompass ambiguities. - */ - - next = key->next; - while (next != kmax) - { - if ((unsigned int) next->str[0] > len) - { - key_ch = next->str[len]; - if (chup != UPPER_CASE_KEY(key_ch)) - break; - } - next = next->next; - } - kmax = next; - } - - return NULL; -} - -void SLang_undefine_key(char *s, SLKeyMap_List_Type *kml) -{ - int n, i; - SLang_Key_Type *key, *next, *last, *key_root, *keymap; - unsigned char *str; - - keymap = kml -> keymap; - if (NULL == (str = (unsigned char *) SLang_process_keystring(s))) - return; - - if (0 == (n = *str++ - 1)) return; - i = *str; - - last = key_root = (SLang_Key_Type *) &(keymap[i]); - key = key_root->next; - - while (key != NULL) - { - next = key->next; - if (0 == SLMEMCMP ((char *)(key->str + 1), (char *) str, n)) - { - if (key->type == SLKEY_F_INTERPRET) - SLang_free_slstring (key->f.s); - - SLfree((char *) key); - last->next = next; - } - else last = key; - key = next; - } - - if (n == 1) - { - *key_root->str = 0; - key_root->f.f = NULL; - key_root->type = 0; - } -} - -char *SLang_make_keystring(unsigned char *s) -{ - static char buf [3 * SLANG_MAX_KEYMAP_KEY_SEQ + 1]; - char *b; - int n; - - n = *s++ - 1; - - if (n > SLANG_MAX_KEYMAP_KEY_SEQ) - { - SLang_verror (SL_INVALID_PARM, "Key sequence is too long"); - return NULL; - } - - b = buf; - while (n--) - { - if (*s < 32) - { - *b++ = '^'; - *b++ = *s + 'A' - 1; - } - else *b++ = *s; - s++; - } - *b = 0; - return(buf); -} - -static SLang_Key_Type *copy_keymap(SLKeyMap_List_Type *kml) -{ - int i; - SLang_Key_Type *neew, *old, *new_root, *km; - - if (NULL == (new_root = (SLang_Key_Type *) SLcalloc(256, sizeof(SLang_Key_Type)))) - return NULL; - - if (kml == NULL) return new_root; - km = kml->keymap; - - for (i = 0; i < 256; i++) - { - old = &(km[i]); - neew = &(new_root[i]); - - if (old->type == SLKEY_F_INTERPRET) - neew->f.s = SLang_create_slstring (old->f.s); - else - neew->f.f = old->f.f; - - neew->type = old->type; - SLMEMCPY((char *) neew->str, (char *) old->str, (unsigned int) *old->str); - - old = old->next; - while (old != NULL) - { - neew->next = malloc_key((unsigned char *) old->str); - neew = neew->next; - - if (old->type == SLKEY_F_INTERPRET) - neew->f.s = SLang_create_slstring (old->f.s); - else - neew->f.f = old->f.f; - - neew->type = old->type; - old = old->next; - } - neew->next = NULL; - } - return(new_root); -} - -SLKeyMap_List_Type *SLang_create_keymap(char *name, SLKeyMap_List_Type *map) -{ - SLang_Key_Type *neew; - SLKeyMap_List_Type *new_map; - - if ((NULL == (neew = copy_keymap(map))) - || (NULL == (new_map = add_keymap(name, neew)))) return NULL; - - if (map != NULL) new_map -> functions = map -> functions; - - return new_map; -} - -SLKeyMap_List_Type *SLang_find_keymap(char *name) -{ - SLKeyMap_List_Type *kmap, *kmap_max; - - kmap = SLKeyMap_List; - kmap_max = kmap + SLANG_MAX_KEYMAPS; - - while (kmap < kmap_max) - { - if ((kmap->name != NULL) - && (0 == strcmp (kmap->name, name))) - return kmap; - - kmap++; - } - return NULL; -} |