forked from mirrors/treebird
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/*
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* Treebird - Lightweight frontend for Pleroma
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* Copyright (C) 2022 Nekobit
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <fcgi_stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "string_helpers.h"
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#include "easprintf.h"
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char* construct_func_strings(char* (*func)(void*, size_t, size_t*),
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void* strings,
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size_t strings_len,
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size_t* ret_size)
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{
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char* res_html, *result = NULL;
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size_t curr_parse_size = 0, last_parse_size, parse_size;
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if (strings_len <= 0) return NULL;
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for (size_t i = 0; i < strings_len; ++i)
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{
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res_html = func(strings, i, &parse_size);
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// Don't bother if it returns null
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// Null is equivalent to ""
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if (!res_html) continue;
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if (parse_size == -1) /* Malloc error */
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{
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if (result) free(result);
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return NULL;
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}
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last_parse_size = curr_parse_size;
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curr_parse_size += parse_size;
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result = realloc(result, curr_parse_size + 1);
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if (result == NULL)
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{
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perror("malloc");
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free(res_html);
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return NULL;
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}
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// Copy res_html to result in correct position
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strncpy(result + last_parse_size, res_html, parse_size);
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// Cleanup
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free(res_html);
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}
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if (result)
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result[curr_parse_size] = '\0';
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if (ret_size) *ret_size = curr_parse_size;
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return result;
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}
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