1 | #include <ctype.h> |
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2 | #include <string.h> |
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3 | #include "owl.h" |
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4 | |
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5 | /* |
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6 | * TODO: Idea for allowing functions to be user-specified --- |
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7 | * Have function have a context bitmask that says where it |
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8 | * can be used, and have keymaps also have one, and compare |
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9 | * the two when setting. |
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10 | * |
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11 | */ |
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12 | |
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13 | /* sets up a new keybinding for a command */ |
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14 | int owl_keybinding_init(owl_keybinding *kb, const char *keyseq, const char *command, void (*function_fn)(void), const char *desc) |
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15 | { |
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16 | char **ktokens; |
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17 | int nktokens, i; |
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18 | |
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19 | owl_function_debugmsg("owl_keybinding_init: creating binding for <%s> with desc: <%s>", keyseq, desc); |
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20 | if (command && !function_fn) { |
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21 | kb->type = OWL_KEYBINDING_COMMAND; |
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22 | } else if (!command && function_fn) { |
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23 | kb->type = OWL_KEYBINDING_FUNCTION; |
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24 | } else { |
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25 | return(-1); |
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26 | } |
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27 | |
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28 | ktokens = atokenize(keyseq, " ", &nktokens); |
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29 | if (!ktokens) return(-1); |
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30 | if (nktokens > OWL_KEYMAP_MAXSTACK) { |
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31 | atokenize_delete(ktokens, nktokens); |
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32 | return(-1); |
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33 | } |
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34 | kb->keys = owl_malloc(nktokens*sizeof(int)); |
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35 | for (i=0; i<nktokens; i++) { |
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36 | kb->keys[i] = owl_keypress_fromstring(ktokens[i]); |
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37 | if (kb->keys[i] == ERR) { |
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38 | atokenize_delete(ktokens, nktokens); |
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39 | owl_free(kb->keys); |
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40 | return(-1); |
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41 | } |
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42 | } |
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43 | kb->len = nktokens; |
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44 | |
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45 | atokenize_delete(ktokens, nktokens); |
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46 | |
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47 | if (command) kb->command = owl_strdup(command); |
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48 | kb->function_fn = function_fn; |
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49 | if (desc) kb->desc = owl_strdup(desc); |
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50 | else kb->desc = NULL; |
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51 | return(0); |
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52 | } |
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53 | |
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54 | /* Releases data associated with a keybinding */ |
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55 | void owl_keybinding_cleanup(owl_keybinding *kb) |
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56 | { |
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57 | if (kb->keys) owl_free(kb->keys); |
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58 | if (kb->desc) owl_free(kb->desc); |
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59 | if (kb->command) owl_free(kb->command); |
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60 | } |
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61 | |
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62 | /* Releases data associated with a keybinding, and the kb itself */ |
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63 | void owl_keybinding_free_all(owl_keybinding *kb) |
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64 | { |
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65 | owl_keybinding_cleanup(kb); |
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66 | owl_free(kb); |
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67 | } |
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68 | |
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69 | /* executes a keybinding */ |
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70 | void owl_keybinding_execute(const owl_keybinding *kb, int j) |
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71 | { |
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72 | if (kb->type == OWL_KEYBINDING_COMMAND && kb->command) { |
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73 | owl_function_command_norv(kb->command); |
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74 | } else if (kb->type == OWL_KEYBINDING_FUNCTION && kb->function_fn) { |
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75 | kb->function_fn(); |
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76 | } |
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77 | } |
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78 | |
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79 | /* returns 0 on success */ |
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80 | int owl_keybinding_stack_tostring(int *j, int len, char *buff, int bufflen) |
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81 | { |
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82 | char *pos = buff; |
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83 | int rem = bufflen; |
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84 | int i, n; |
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85 | |
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86 | for (i=0; i < len; i++) { |
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87 | owl_keypress_tostring(j[i], 0, pos, rem-1); |
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88 | if (i < len - 1) strcat(pos, " "); |
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89 | n = strlen(pos); |
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90 | pos += n; |
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91 | rem -= n; |
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92 | } |
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93 | return 0; |
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94 | } |
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95 | |
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96 | /* returns 0 on success */ |
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97 | int owl_keybinding_tostring(const owl_keybinding *kb, char *buff, int bufflen) |
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98 | { |
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99 | return owl_keybinding_stack_tostring(kb->keys, kb->len, buff, bufflen); |
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100 | } |
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101 | |
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102 | const char *owl_keybinding_get_desc(const owl_keybinding *kb) |
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103 | { |
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104 | return kb->desc; |
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105 | } |
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106 | |
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107 | /* returns 0 on no match, 1 on subset match, and 2 on complete match */ |
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108 | int owl_keybinding_match(const owl_keybinding *kb, const owl_keyhandler *kh) |
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109 | { |
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110 | int i; |
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111 | for(i = 0; i <= kh->kpstackpos && i < kb->len; i++) { |
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112 | if(kb->keys[i] != kh->kpstack[i]) |
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113 | return 0; |
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114 | } |
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115 | |
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116 | /* If we've made it to this point, then they match as far as they are. */ |
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117 | if(kb->len == kh->kpstackpos + 1) { |
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118 | /* Equal length */ |
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119 | return 2; |
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120 | } else if(kb->len > kh->kpstackpos + 1) { |
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121 | return 1; |
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122 | } |
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123 | |
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124 | return 0; |
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125 | } |
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126 | |
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127 | /* returns 1 if keypress sequence is the same */ |
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128 | int owl_keybinding_equal(const owl_keybinding *kb1, const owl_keybinding *kb2) |
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129 | { |
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130 | int i; |
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131 | |
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132 | if(kb1->len != kb2->len) return 0; |
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133 | |
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134 | for(i = 0; i < kb1->len; i++) { |
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135 | if(kb1->keys[i] != kb2->keys[i]) |
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136 | return 0; |
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137 | } |
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138 | |
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139 | return 1; |
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140 | } |
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