Mercurial > libedl

annotate src/str.c @ 10:d6f8f73a0c50 v2.1

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util: make strnchr an actual strnchr
author Paper <paper@paper.us.eu.org>
date Fri, 22 Mar 2024 20:51:40 -0400
parents 0c98b46eaf73
children 0cc2555db371
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1 #include "str.h"
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3 #include <stdlib.h>
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4 #include <string.h>
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6 /* rudimentary string functions so the code in edl.c isn't
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7 * as painful to read
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8 */
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10 int EDL_internal_string_init(EDL_internal_string* str) {
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11 if (!str)
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12 return 0;
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14 str->size = 0;
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15 str->capacity = 0;
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16 str->data = NULL;
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17 return 1;
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18 }
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20 int EDL_internal_string_allocate(EDL_internal_string* str, size_t new_capacity) {
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21 if (new_capacity == str->capacity)
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22 return 1; /* nothing to do */
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24 str->data = realloc(str->data, new_capacity * sizeof(char));
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25 if (!str->data)
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26 return 0;
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28 //if (new_capacity > str->capacity)
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29 // memset(&str->data[str->capacity], 0, (new_capacity - str->capacity) * sizeof(char));
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31 str->capacity = new_capacity;
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33 return 1;
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34 }
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36 int EDL_internal_string_append(EDL_internal_string* str, const char* data, const size_t length) {
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37 if (str->capacity == 0)
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38 if (!EDL_internal_string_allocate(str, 1))
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39 return 0;
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41 if (str->size + length + 1 >= str->capacity) {
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42 size_t capacity = 1;
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43 while (capacity < (str->size + length + 1))
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44 capacity *= 2;
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46 if (!EDL_internal_string_allocate(str, capacity))
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47 return 0;
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48 }
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50 strncat(str->data, data, length);
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51 str->size += length;
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53 return length;
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54 }
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56 void EDL_internal_string_free(EDL_internal_string* str) {
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57 if (str->data)
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58 free(str->data);
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59 }