Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | #include <string.h> |
| 4 | #include <errno.h> |
| 5 | #include <assert.h> |
| 6 | |
| 7 | #include "asn1parser.h" |
| 8 | |
| 9 | /* |
| 10 | * Construct a new empty reference. |
| 11 | */ |
| 12 | asn1p_ref_t * |
| 13 | asn1p_ref_new(int _lineno) { |
| 14 | asn1p_ref_t *ref; |
| 15 | |
| 16 | ref = calloc(1, sizeof *ref); |
| 17 | if(ref) { |
| 18 | ref->_lineno = _lineno; |
| 19 | } |
| 20 | |
| 21 | return ref; |
| 22 | } |
| 23 | |
| 24 | void |
| 25 | asn1p_ref_free(asn1p_ref_t *ref) { |
| 26 | if(ref) { |
| 27 | if(ref->components) { |
| 28 | int i = ref->comp_count; |
| 29 | while(i--) { |
| 30 | if(ref->components[i].name) |
| 31 | free(ref->components[i].name); |
| 32 | ref->components[i].name = 0; |
| 33 | } |
| 34 | free(ref->components); |
| 35 | ref->components = 0; |
| 36 | } |
| 37 | |
| 38 | free(ref); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | static enum asn1p_ref_lex_type_e |
| 43 | asn1p_ref_name2lextype(char *name) { |
| 44 | enum asn1p_ref_lex_type_e lex_type; |
| 45 | int has_lowercase = 0; |
| 46 | |
| 47 | if(*name == '&') { |
| 48 | if(name[1] >= 'A' && name[1] <= 'Z') { |
| 49 | lex_type = RLT_AmpUppercase; |
| 50 | } else { |
| 51 | lex_type = RLT_Amplowercase; |
| 52 | } |
| 53 | } else if(*name >= 'A' && *name <= 'Z') { |
| 54 | char *p; |
| 55 | |
| 56 | for(p = name; *p; p++) { |
| 57 | if(*p >= 'a' && *p <= 'z') { |
| 58 | has_lowercase = 1; |
| 59 | break; |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | if(has_lowercase) { |
| 64 | lex_type = RLT_Uppercase; |
| 65 | } else { |
| 66 | lex_type = RLT_CAPITALS; |
| 67 | } |
| 68 | } else if(*name == '@') { |
| 69 | if(name[1] == '.') |
| 70 | lex_type = RLT_AtDotlowercase; |
| 71 | else |
| 72 | lex_type = RLT_Atlowercase; |
| 73 | } else { |
| 74 | lex_type = RLT_lowercase; |
| 75 | } |
| 76 | |
| 77 | return lex_type; |
| 78 | } |
| 79 | |
| 80 | int |
| 81 | asn1p_ref_add_component(asn1p_ref_t *ref, char *name, enum asn1p_ref_lex_type_e lex_type) { |
| 82 | |
Lev Walkin | d9bd775 | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 83 | if(!ref || !name |
| 84 | || (int)lex_type < RLT_UNKNOWN || lex_type >= RLT_MAX) { |
Lev Walkin | f15320b | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 85 | errno = EINVAL; |
| 86 | return -1; |
| 87 | } |
| 88 | |
| 89 | if(ref->comp_count == ref->comp_size) { |
| 90 | int newsize = ref->comp_size?(ref->comp_size<<2):4; |
| 91 | void *p = realloc(ref->components, |
| 92 | newsize * sizeof(ref->components[0])); |
| 93 | if(p) { |
| 94 | ref->components = p; |
| 95 | ref->comp_size = newsize; |
| 96 | } else { |
| 97 | return -1; |
| 98 | } |
| 99 | |
| 100 | } |
| 101 | |
| 102 | if(lex_type == RLT_UNKNOWN) { |
| 103 | lex_type = asn1p_ref_name2lextype(name); |
| 104 | } else { |
| 105 | assert(lex_type == asn1p_ref_name2lextype(name)); |
| 106 | } |
| 107 | |
| 108 | ref->components[ref->comp_count].name = strdup(name); |
| 109 | ref->components[ref->comp_count].lex_type = lex_type; |
| 110 | if(ref->components[ref->comp_count].name) { |
| 111 | ref->comp_count++; |
| 112 | return 0; |
| 113 | } else { |
| 114 | return -1; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | asn1p_ref_t * |
| 119 | asn1p_ref_clone(asn1p_ref_t *ref) { |
| 120 | asn1p_ref_t *newref; |
| 121 | |
| 122 | newref = asn1p_ref_new(ref->_lineno); |
| 123 | if(newref) { |
| 124 | int i; |
| 125 | for(i = 0; i < ref->comp_count; i++) { |
| 126 | if(asn1p_ref_add_component(newref, |
| 127 | ref->components[i].name, |
| 128 | ref->components[i].lex_type |
| 129 | )) { |
| 130 | asn1p_ref_free(newref); |
| 131 | newref = NULL; |
| 132 | break; |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | return newref; |
| 138 | } |