process.c
上传用户:mei_mei897
上传日期:2007-01-05
资源大小:82k
文件大小:7k
- /* -------------------------------------------------------------------- */
- /* SMS Client, send messages to mobile phones and pagers */
- /* */
- /* process.c */
- /* */
- /* Copyright (C) 1997,1998 Angelo Masci */
- /* */
- /* This library is free software; you can redistribute it and/or */
- /* modify it under the terms of the GNU Library General Public */
- /* License as published by the Free Software Foundation; either */
- /* version 2 of the License, or (at your option) any later version. */
- /* */
- /* This library is distributed in the hope that it will be useful, */
- /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
- /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU */
- /* Library General Public License for more details. */
- /* */
- /* You should have received a copy of the GNU Library General Public */
- /* License along with this library; if not, write to the Free */
- /* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
- /* */
- /* You can contact the author at this e-mail address: */
- /* */
- /* angelo@styx.demon.co.uk */
- /* */
- /* -------------------------------------------------------------------- */
- /* $Id$
- -------------------------------------------------------------------- */
- #include <stdio.h>
- #include <sys/types.h>
- #include <dirent.h>
- #include <sys/stat.h>
- #include <limits.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include "process.h"
- /* -------------------------------------------------------------------- */
- #define MAX_PATH 256
- /* -------------------------------------------------------------------- */
- #define TF_UNKNOWN 0
- #define TF_CONTROL 1
- #define TF_DATA 2
- /* -------------------------------------------------------------------- */
- struct file_list_struct
- {
- char *name;
- int type;
- time_t mtime;
- struct file_list_struct
- *next;
- };
- typedef struct file_list_struct FILE_LIST;
- /* -------------------------------------------------------------------- */
- static FILE_LIST *add_file_item(FILE_LIST *list, char *name, time_t mtime, int type);
- static FILE_LIST *qsort_list(FILE_LIST *list);
- static int num_items_in_list(FILE_LIST *list);
- static int file_item_compare(const void *item1, const void *item2);
- static void dump_list(FILE_LIST *list);
- static void free_list(FILE_LIST *list);
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static FILE_LIST *add_file_item(FILE_LIST *list, char *name, time_t mtime, int type)
- {
- FILE_LIST *item;
- item = (FILE_LIST *)malloc(sizeof(FILE_LIST));
- if (item == NULL)
- {
- fprintf(stderr, "Error: malloc() failedn");
- exit(1);
- }
- item->name = (char *)malloc(sizeof(char) * (strlen(name) +1));
- if (item->name == NULL)
- {
- fprintf(stderr, "Error: malloc() failedn");
- exit(1);
- }
- strcpy(item->name, name);
- item->mtime = mtime;
- item->type = type;
- item->next = list;
- return item;
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static int num_items_in_list(FILE_LIST *list)
- {
- int count;
- FILE_LIST
- *item;
- count = 0;
- item = list;
- while(item != NULL)
- {
- count++;
- item = item->next;
- }
- return count;
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static int file_item_compare(const void *item1, const void *item2)
- {
- time_t mtime_1,
- mtime_2;
- mtime_1 = (*(FILE_LIST **)item1)->mtime;
- mtime_2 = (*(FILE_LIST **)item2)->mtime;
- if (mtime_1 > mtime_2)
- { return 1;
- }
- if (mtime_1 < mtime_2)
- { return -1;
- }
- return strcmp((*(FILE_LIST **)item1)->name, (*(FILE_LIST **)item2)->name);
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static FILE_LIST *qsort_list(FILE_LIST *list)
- {
- int count,
- i;
- FILE_LIST
- **file_list_array,
- *item;
- count = num_items_in_list(list);
-
- file_list_array = (FILE_LIST **)malloc(sizeof(FILE_LIST *) * count);
- if (file_list_array == NULL)
- {
- fprintf(stderr, "Error: malloc() failedn");
- exit(1);
- }
- item = list;
- for (i=0; item != NULL; i++)
- { file_list_array[i] = item;
- item = item->next;
- }
- qsort(file_list_array, count, sizeof(FILE_LIST *), file_item_compare);
- list = file_list_array[0];
- for (i=0; i<count-1; i++)
- { file_list_array[i]->next = file_list_array[i+1];
- }
- file_list_array[i]->next = NULL;
- free(file_list_array);
- return list;
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static void dump_list(FILE_LIST *list)
- {
- FILE_LIST
- *item;
- char *stype;
- item = list;
- while(item != NULL)
- {
- if (item->type == TF_CONTROL)
- { stype = "CONTROL";
- }
- else
- if (item->type == TF_DATA)
- { stype = "DATA";
- }
- else
- { stype = "UNKNOWN";
- }
- printf("%s %d %sn", item->name, (int)item->mtime, stype);
- item = item->next;
- }
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- static void free_list(FILE_LIST *list)
- {
- FILE_LIST
- *prev_item,
- *item;
- item = list;
- while(item != NULL)
- {
- prev_item = item;
- item = item->next;
- free(prev_item->name);
- free(prev_item);
- }
- }
- /* -------------------------------------------------------------------- */
- /* -------------------------------------------------------------------- */
- int process_queue(char *queue)
- {
- DIR *dir;
- struct dirent
- *entry;
- struct stat
- status;
- char cwd[MAX_PATH+1];
- FILE_LIST
- *file_list = NULL;
- int type;
- dir = opendir(queue);
- if (dir == NULL)
- { return -1;
- }
- if (getcwd(cwd, MAX_PATH+1) == NULL)
- { return -1;
- }
- if (chdir(queue) != 0)
- { return -1;
- }
- while((entry = readdir(dir)) != NULL)
- {
- if ((strcmp(entry->d_name, ".") != 0) &&
- (strcmp(entry->d_name, "..") != 0))
- {
- if (stat(entry->d_name, &status) != 0)
- { return -1;
- }
- if (!S_ISDIR(status.st_mode))
- {
- if (strncmp(entry->d_name, "cf", 2) == 0)
- { type = TF_CONTROL;
- }
- else
- if (strncmp(entry->d_name, "df", 2) == 0)
- { type = TF_DATA;
- }
- else
- { type = TF_UNKNOWN;
- }
- file_list = add_file_item(file_list, entry->d_name, status.st_mtime, type);
- }
- }
- }
- if (closedir(dir) != 0)
- { return -1;
- }
- if (chdir(cwd) != 0)
- { return -1;
- }
- file_list = qsort_list(file_list);
- dump_list(file_list);
- free_list(file_list);
-
- return 0;
- }