如何创建一个从文件中获取值的函数，使它们成为结构数组并返回它？

问：

我有一个名为languages.c的源文件。我想读取 get_availabile_languages （） 的数据/语言.txt文本并创建一个语言结构数组并在每个元素中定义它们。

但是，当我尝试执行此操作时，我收到 SIGSEGV 错误。 我创建的代码旨在执行以下操作。

1. 开始计算行数。创建一个元素，每行都有一个结构。languagesLanguage
2. 用于在符号处拆分字符串。将第一个赋值给变量，将第二个赋值给 。strtok ()data/languages.txt=lang_codelang_name
3. 完成后，返回结构数组。

/* main.c */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include "language.h"

int i;

int main ()
{
  puts ("--- Welcome to PiluX CLI installer ---");
  puts ("Language: ");
  // char* lang_name = get_language_name_from_code ("en");
  // char* lang_code = get_language_code_from_name ("English");
  // printf ("%s\n", lang_name);
  // printf ("%s\n", lang_code);
  Language *languages = get_available_languages ();
  printf ("%s\n", languages[0].name);
  free (languages);

  return 0;
}

/* language.c */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>

#include <piluxsetup/language.h>


FILE* _open_languages_file ()
{
  /* 
    data/languages.txt dosyasını açar.
    Kodun tekrar tekrar yazılmaması için oluşturuldu.
  */
  FILE *supported_languages = fopen ("data/languages.txt", "r");
  
  if (!supported_languages)
  {
    printf ("\033[1;91mhata:\033[0m Language list can't open: %s\n", strerror(errno));
    exit (1);
  }

  return supported_languages;
}

char* get_language_name_from_code (char* code)
{
  /*
    Dil kodları arasından en yakın eşleşmeyi döndürür.
    Örnek:
    get_language_from_code ("de_DE"); -> Deutsh
  */

  FILE *supported_languages = _open_languages_file ();

  char *line;
  while (fgets (line, 80, supported_languages) != NULL)
  {
    if (strstr (line, code))
    {
      char* tokenizer = strtok (line, "="); // Birinci elemanı döndürür.
      return tokenizer;
      fclose(supported_languages);
    }
  }
  fclose(supported_languages);
  return "(not specified)";
}

char* get_language_code_from_name (char* name)
{
  /*
    Dil adları arasından en yakın eşleşmeyi döndürür.
    Örnek:
    get_language_from_name ("Türkçe"); -> tr_TR
  */

  FILE *supported_languages = _open_languages_file ();

  char *line;
  while (fgets (line, 80, supported_languages) != NULL)
  {
    if (strstr (line, name))
    {
      char* tokenizer = strtok (line, "=");
      tokenizer = strtok (NULL, "="); // sonraki parçayı işle
      tokenizer[strlen (tokenizer) - 1] = '\0'; // newline karakterini sil
      fclose(supported_languages);
      return tokenizer;
    }
  }
  fclose(supported_languages);
  return "(not specified)";
}

Language* get_available_languages ()
{
  FILE *supported_languages = _open_languages_file ();

  int line_count = 0;
  char line[80];

  char* lang_code = "";
  char* lang_name = "";
  Language* languages = malloc (sizeof (Language)*2);

  while (fgets (line, 80, supported_languages) != NULL)
  {
    ++line_count;
    char* tokenizer = strtok (line, "=");
    lang_code = tokenizer;
    tokenizer = strtok (NULL, "="); // sonraki parçayı işle
    lang_name = tokenizer;
    tokenizer[strlen (tokenizer) - 1] = '\0'; // newline karakterini sil

    languages = realloc (languages, line_count);

    strcpy (languages[line_count - 1].name, lang_name);
    strcpy (languages[line_count - 1].code, lang_code);
  }
  return languages;
}

/* language.h */
typedef struct language
{
  char* name;
  char* code;
} Language;

char* get_language_name_from_code (char* code);
char* get_language_code_from_name (char* name);
Language* get_available_languages ();

# data/languages.txt
tr_TR=Türkçe
en_US=English

输出：

[alperen@LAPTOP-EDN1J28M setup]$ make clean && make
Artıklar temizleniyor...
rm -rf lib/* *.o piluxsetup
gcc -c language.c -Iincludes -Llib -lsetup  -fPIC
gcc -c partition.c -Iincludes -Llib -lsetup  -fPIC
gcc language.o partition.o -Iincludes  -shared -o lib/libpiluxsetup.so
gcc -c main.c -Iincludes -Llib -lpiluxsetup  -fPIC
gcc main.o -Llib -lpiluxsetup -Iincludes  -o setup
[alperen@LAPTOP-EDN1J28M distsetup]$ ./setup 
--- Welcome to installer ---
Language: 
Parçalama arızası (çekirdek döküldü)
[alperen@LAPTOP-EDN1J28M distsetup]$ gdb ./setup 
GNU gdb (GDB) Fedora Linux 13.2-2.fc38
Copyright (C) 2023 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

--Type <RET> for more, q to quit, c to continue without paging--
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./setup...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.fedoraproject.org/>
Enable debuginfod for this session? (y or [n]) 
Debuginfod has been disabled.
To make this setting permanent, add 'set debuginfod enabled off' to .gdbinit.
(No debugging symbols found in ./piluxsetup)
(gdb) run
Starting program: /home/alperen/Projeler/distsetup/piluxsetup 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
--- Welcome to installer ---
Language: 

Program received signal SIGSEGV, Segmentation fault.
__strcpy_evex () at ../sysdeps/x86_64/multiarch/strcpy-evex.S:223
223             vmovq   %VMM_128(0), (%rdi)
(gdb)