user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<read_string>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x90,%rsp
  mov    %rdi,-0x78(%rbp)
  mov    %rsi,-0x80(%rbp)
  mov    %rdx,-0x88(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movq   $0x0,-0x68(%rbp)
  cmpq   $0x0,-0x80(%rbp)
  jne    L61
  lea    D71(%rip),%rax
  mov    %rax,%rdx
  lea    D68(%rip),%rax
  mov    %rax,%rsi
  mov    $0x9f,%edi
  call   <errhandler@plt>
L61:
  cmpq   $0x0,-0x78(%rbp)
  jne    L54
  lea    D10(%rip),%rax
  mov    %rax,%rdx
  lea    D68(%rip),%rax
  mov    %rax,%rsi
  mov    $0xa0,%edi
  call   <errhandler@plt>
L54:
  cmpq   $0x0,-0x88(%rbp)
  jne    L22
  lea    D91(%rip),%rax
  mov    %rax,%rdx
  lea    D68(%rip),%rax
  mov    %rax,%rsi
  mov    $0xa1,%edi
  call   <errhandler@plt>
L22:
  mov    -0x80(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2a,%al
  jne    L32
  mov    -0x80(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    -0x78(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <find_string@plt>
  mov    %rax,-0x68(%rbp)
  jmp    L3
L32:
  mov    -0x80(%rbp),%rdx
  mov    -0x78(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <find_string@plt>
  mov    %rax,-0x68(%rbp)
L3:
  mov    -0x88(%rbp),%rdx
  mov    -0x68(%rbp),%rax
  lea    D69(%rip),%rcx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <sscanf@plt>
  test   %rax,%rax
  jne    L9
  mov    -0x80(%rbp),%rcx
  mov    -0x78(%rbp),%rdx
  lea    -0x60(%rbp),%rax
  mov    %rcx,%r8
  mov    %rdx,%rcx
  lea    D38(%rip),%rdx
  lea    D112(%rip),%rsi
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <sprintf@plt>
  lea    -0x60(%rbp),%rax
  mov    %rax,%rdx
  lea    D68(%rip),%rax
  mov    %rax,%rsi
  mov    $0xa9,%edi
  call   <errhandler@plt>
L9:
  mov    -0x80(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    $0xf,%esi
  mov    %eax,%edi
  call   <min_int@plt>
  lea    D31(%rip),%rdx
  lea    (%rax,%rdx,1),%rcx
  mov    -0x88(%rbp),%rsi
  mov    -0x80(%rbp),%rdx
  mov    -0x78(%rbp),%rax
  mov    %rsi,%r8
  mov    %rax,%rsi
  lea    D73(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L41
  call   <__stack_chk_fail@plt>
L41:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_tag: D71
datatype: string
name: read_data
arguments: data_tag: D68
datatype: string
name: read_data
arguments: data_tag: D10
datatype: string
name: read_data
arguments: data_tag: D91
datatype: string
name: read_data
arguments: data_tag: D69
datatype: string
name: read_data
arguments: data_tag: D38
datatype: string
name: read_data
arguments: data_tag: D112
datatype: string
name: read_data
arguments: data_tag: D31
datatype: string
name: read_data
arguments: data_tag: D73
datatype: string

tool: D71: null pointer given as variable name

tool: D68: /scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/grantathon/computational_fluid_dynamics/refs/heads/master/01_assignment/helper.c

tool: D10: null pointer given as filename

tool: D91: null pointer given as variable

tool: D69: %s

tool: D38: wrong format

tool: D112:  %s  File: %s   Variable: %s 

tool: D31:                

tool: D73: File: %s		%s%s= %s


assistant: ```c
void read_string(const char *szFileName, const char *szVarName, char *pVariable) {
  char *szValue = NULL;
  if (szVarName == 0)
    errhandler(159, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/grantathon/computational_fluid_dynamics/refs/heads/master/01_assignment/helper.c", "null pointer given as variable name");
  if (szFileName == 0)
    errhandler(160, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/grantathon/computational_fluid_dynamics/refs/heads/master/01_assignment/helper.c", "null pointer given as filename");
  if (pVariable == 0)
    errhandler(161, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/grantathon/computational_fluid_dynamics/refs/heads/master/01_assignment/helper.c", "null pointer given as variable");
  if (szVarName[0] == '*')
    szValue = find_string(szFileName, szVarName + 1);
  else
    szValue = find_string(szFileName, szVarName);
  if (sscanf(szValue, "%s", pVariable) == 0) {
    char szTmp[80];
    if (0)
      sprintf(szTmp, " %s  File: %s   Variable: %s  Line: %d", "wrong format", szFileName, szVarName, 0);
    else
      sprintf(szTmp, " %s  File: %s   Variable: %s ", "wrong format", szFileName, szVarName);
    errhandler(169, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/grantathon/computational_fluid_dynamics/refs/heads/master/01_assignment/helper.c", szTmp);
  };
  printf("File: %s\t\t%s%s= %s\n", szFileName, szVarName, &("               "[min_int(strlen(szVarName), 15)]), pVariable);
}
```