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annotate src/datatypes.c @ 12:0cc2555db371

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*: make our string functions not stupid strncat() made everything slow! new addition internally: an EDL_header structure to make things not stupid. if we were using C++ it wouldn't really be necessary, but alas :)
author Paper <paper@paper.us.eu.org>
date Wed, 27 Mar 2024 13:38:30 -0400
parents 0c98b46eaf73
children 2d7c810a1ac2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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8
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1 #include "datatypes.h"
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2 #include "util.h"
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3 #include "str.h"
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4
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5 #include <stdlib.h>
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6 #include <string.h>
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7 #include <stdio.h>
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8
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9 static size_t EDL_internal_append_offset(const char* input, size_t offset, size_t length) {
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10 size_t s = 0;
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11
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12 s += strchr(&input[offset + s], ';') - &input[offset];
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13 if (s + offset > length)
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14 return s;
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15
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16 s += strspn(&input[offset + s], ";\t ");
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17 if (s + offset > length)
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18 return s;
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19
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20 return s;
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21 }
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22
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23 size_t EDL_internal_parse_int(const char* input, size_t offset, size_t length, int* int_return) {
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24 if (offset > length)
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25 return 0;
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26
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27 {
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28 char* ptr_return;
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29 *int_return = strtol(&input[offset], &ptr_return, 10);
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30
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31 if (!ptr_return)
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32 return 0;
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33 }
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34
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35 return EDL_internal_append_offset(input, offset, length);
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36 }
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37
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38 size_t EDL_internal_parse_double(const char* input, size_t offset, size_t length, double* double_return) {
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39 if (offset > length)
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40 return 0;
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41
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42 {
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43 char* ptr_return;
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44 *double_return = strtod(&input[offset], &ptr_return);
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45
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46 if (!ptr_return)
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47 return 0;
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48 }
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49
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50 return EDL_internal_append_offset(input, offset, length);
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51 }
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52
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53 size_t EDL_internal_parse_bool(const char* input, size_t offset, size_t length, bool* bool_return) {
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54 if (offset > length)
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55 return 0;
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56
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57 if (!strncmp(&input[offset], "TRUE", 4))
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58 *bool_return = true;
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59 else if (!strncmp(&input[offset], "FALSE", 5))
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60 *bool_return = false;
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61
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62 return EDL_internal_append_offset(input, offset, length);
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63 }
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64
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65 size_t EDL_internal_parse_media_type(const char* input, size_t offset, size_t length, EDL_media_type_t* media_return) {
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66 if (offset > length)
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67 return 0;
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68
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69 if (!strncmp(&input[offset], "VIDEO", 5))
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70 *media_return = MEDIATYPE_VIDEO;
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71 else if (!strncmp(&input[offset], "AUDIO", 5))
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72 *media_return = MEDIATYPE_AUDIO;
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73 else
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74 *media_return = MEDIATYPE_UNKNOWN;
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75
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76 return EDL_internal_append_offset(input, offset, length);
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77 }
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78
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79 size_t EDL_internal_parse_string(const char* input, size_t offset, size_t length, char** string_return) {
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80 size_t start, s_length;
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81
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82 /* will most definitely break on good filesystems */
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83 if (offset > length)
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84 return 0;
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85
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86 start = strchr(&input[offset], '\"') - &input[offset] + 1;
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87 if (start + offset > length)
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88 return 0;
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89
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90 s_length = strchr(&input[offset + start], '\"') - &input[offset] - start;
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91 if (start + s_length + offset > length)
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92 return 0;
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93
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94 *string_return = malloc((s_length + 1) * sizeof(char));
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95 if (!*string_return)
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96 return 0;
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97
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98 memcpy(*string_return, &input[offset + start], s_length);
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99 (*string_return)[s_length] = '\0';
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100
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101 return EDL_internal_append_offset(input, offset, length);
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102 }
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103
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104 int EDL_internal_append_integer_to_string(EDL_internal_string* str, int value) {
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105 char out[32] = {0}; /* this ought to be enough. */
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106 int c = snprintf(out, 32, "%d", value);
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107 return EDL_internal_string_append(str, out, (c < 32) ? c : 32);
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108 }
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109
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110 int EDL_internal_append_double_to_string(EDL_internal_string* str, double value) {
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111 char out[128] = {0};
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112 int c = snprintf(out, 128, "%.6f", value);
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113 return EDL_internal_string_append(str, out, (c < 128) ? c : 128);
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114 }
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115
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116 int EDL_internal_append_bool_to_string(EDL_internal_string* str, bool value) {
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117 if (value) {
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118 EDL_internal_string_append(str, "TRUE", 4);
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119 } else {
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120 EDL_internal_string_append(str, "FALSE", 5);
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121 }
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122 }
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123
12
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124 int EDL_internal_append_media_type_to_string(EDL_internal_string* str, EDL_media_type_t value) {
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125 switch (value) {
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126 case MEDIATYPE_AUDIO:
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127 return EDL_internal_string_append(str, "AUDIO", 5);
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128 case MEDIATYPE_VIDEO:
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129 case MEDIATYPE_UNKNOWN:
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130 default:
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131 return EDL_internal_string_append(str, "VIDEO", 5);
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132 }
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133 }