168 lines
3.7 KiB
C++
168 lines
3.7 KiB
C++
#include "Tool_Functions.hpp"
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extern "C"
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{
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#include "string.h"
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#include "ctype.h"
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}
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// 行进到上一行起始位置
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size_t f_seek_pre_line_begin(FILE *file)
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{
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int count = 0;
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// 本身就在文件起始位置
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if (ftell(file) == 0)
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return 0;
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// 本身在文件结尾
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if (fgetc(file) == EOF)
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{
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// 移动到之前
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do
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{
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fseek(file, -2, SEEK_CUR);
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count--;
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} while (ftell(file) != 0 && fgetc(file) != '\n');
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return count;
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}
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// 其它情况
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// 移动到上一行的结尾处（回到本行起始位置）
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while (ftell(file) != 0 && fgetc(file) != '\n')
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{
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fseek(file, -2, SEEK_CUR);
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count--;
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}
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// 移动到上上一行的结尾处
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do
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{
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fseek(file, -2, SEEK_CUR);
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count--;
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} while (ftell(file) != 0 && fgetc(file) != '\n');
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return count;
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}
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// 读取文件一行
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size_t f_getline(FILE *file, char *buffer, const size_t buffer_len)
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{
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if (buffer == nullptr || file == nullptr)
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return 0;
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memset(buffer, '\0', buffer_len);
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size_t count = 0;
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// 循环读取
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while (true)
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{
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// 超长判定
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if (count + 1 == buffer_len)
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return buffer_len;
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// 正常读取
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char ch = fgetc(file);
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// 仅文件结尾时
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if (ch == EOF && count == 0)
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return 0;
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// 成功换行
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if (ch == '\n')
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{
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buffer[count] = '\n';
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return count + 1;
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}
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// 没有换行但是遇到了文件结尾
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if (ch == EOF)
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{
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buffer[count] = '\n';
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return count;
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}
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// 其它情况下正常复制
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buffer[count] = ch;
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count++;
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}
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}
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// 进度条打印
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void progress_print(size_t completed, size_t total, bool reflush)
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{
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// 消除单行内容
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if (reflush)
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putchar('\r');
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else
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putchar('\n');
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double p_percent = 1.0 * completed / total;
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putchar('[');
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// 输出完成部分填充
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size_t completed_count = (PROGRESS_LENGTH * p_percent) - 1;
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if (p_percent - (int)(p_percent) > 0.5)
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completed_count++;
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for (int count = completed_count; count > 0; count--)
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putchar('=');
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putchar('>');
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// 填充未完成部分
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for (int count = PROGRESS_LENGTH - (completed_count + 1); count > 0; count--)
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putchar(' ');
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putchar(']');
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// 进度数显
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printf(" %d/%d (%%%.2lf)", completed, total, p_percent * 100);
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}
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// 16进制字符串转有效无符号整数（8字节）
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uint64_t hex_to_value(const char *str)
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{
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uint64_t value = 0;
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int len = strlen(str);
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// 循环读取
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for (int count = 0; count < len; count++)
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{
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value *= 16;
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if (str[count] >= '0' && str[count] <= '9')
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value += str[count] - '0';
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else
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value += toupper(str[count]) - 'A' + 10;
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}
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return value;
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}
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// 判定字符串是否全部为有效数字
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bool is_full_num(const char *str)
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{
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int len = strlen(str);
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for (int count = 0; count < len; count++)
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if (!isdigit(str[count]))
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return false;
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return true;
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}
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// 十进制字符串转有效无符号整数（8字节）
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uint64_t str_to_value(const char *str)
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{
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uint64_t value = 0;
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int len = strlen(str);
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// 循环读取
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for (int count = 0; count < len; count++)
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{
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value *= 10;
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if (str[count] >= '0' && str[count] <= '9')
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value += str[count] - '0';
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}
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return value;
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}
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