спасибо Guinness, надеюсь твои слова будут услышаны
я тут набросал свое видение решения данной задачи, модификация приветствуется:
| Код |
/*
*
* \section copyright Copyright and author
*
* Copyright (C) 2008 - 2013, fish9370.
*
* \author Oleg Shteinliht <fish9370@fpg.ru>
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h> /* for bool type */
#include <getopt.h>
#include <string.h>
#include <limits.h> /* for LINE_MAX constant */
#define PROGNAME "test program"
#define PROGVERSION "0.0.0.1"
#define V_SIZE 256
char *buffv[V_SIZE];
#define BUFF_SIZE 4096
char buff_1[BUFF_SIZE];
char buff_2[BUFF_SIZE];
#define FILENAME "array.txt"
void va2str(char *str, size_t size, char *fmt, char **buffv) {
int pos = 0;
while (*buffv && pos < size)
pos += snprintf(str + pos, size - pos, fmt, *buffv++);
str[pos] = '\0';
}
void str_sort_1(char *buffv[], int size, bool asc)
{
int i, j, imin;
char *tmp;
for (i = 0; i < size - 1; i++) {
for (imin = i, j = i + 1; j < size; j++)
if (asc) {
if (strcmp(buffv[j], buffv[imin]) < 0)
imin = j;
} else
if (strcmp(buffv[j], buffv[imin]) > 0)
imin = j;
tmp = buffv[i];
buffv[i] = buffv[imin];
buffv[imin] = tmp;
}
}
int readfile(char *buff, int buff_size, char *buffv[], int arr_size, const char *filename)
{
char line[LINE_MAX];
FILE *f = fopen(filename, "r");
if (f == NULL)
return -1;
int n = 0, offset = 0, len;
while (fgets(line, sizeof(line), f)) {
if (n == arr_size - 1 || offset + 1 >= buff_size)
break;
if ((len = strlen(line)) <= 1)
continue;
if (line[len - 1] == '\n')
line[len - 1] = '\0';
buffv[n++] = buff + offset;
strncpy(buff + offset, line, buff_size - offset - 1);
offset += len;
buff[offset + 1] = '\0';
}
buffv[n] = NULL;
fclose(f);
return n;
}
void usage(const char * const name)
{
printf("usage:\n%s [options]\n", name);
printf("options:\n");
printf(" --help\t\t\tThis help.\n");
printf(" -V, --version \t\tPrint program version.\n");
printf("\nreport bugs to <fish9370@fpg.ru>\n");
}
int main(int argc, char *argv[])
{
static struct option long_options[] = {
{"help", 0, 0, '?'},
{"version", 0, 0, 'V'},
{0, 0, 0, 0}
};
int c, index = 0;
while ((c = getopt_long(argc, argv, "hV", long_options, &index)) != -1) {
switch (c) {
case ':':
printf("Option -%c requires an operand\n", optopt);
usage(argv[0]);
goto exit;
case 'V':
printf("%s %s\n", PROGNAME, PROGVERSION);
printf("Copyright (C) 2013 ");
printf("fish9370\n");
printf("This is free software; see the source for copying conditions. There is NO\n");
printf("warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n");
goto exit;
case '?':
/*printf("Unrecognized option: -%c\n", optopt);*/
usage(argv[0]);
goto exit;
}
}
int n;
if ((n = readfile(buff_1, BUFF_SIZE, buffv, V_SIZE, FILENAME)) > 0) {
str_sort_1(buffv, n, true);
va2str(buff_2, sizeof(buff_2), "%s ", buffv);
printf("%s\n", buff_2);
} else
printf("error opening file\n");
exit:
return 0;
}
|
сборка
| Код |
gcc -Wall -g ./v2.c -o v2
|
файл array.txt
тестирование
| Код |
#./v2
123 432 aaa abc bbb
|
PS прошу прощения за копирайт, но возможно это кому-то будет полезно |
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