libsheepy

C lib for handling text files, strings and json like data structure with an object oriented system
git clone https://spartatek.se/git/libsheepy.git
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inotify.c (3375B)

      1 //: generator/pp comment config
      2 //:not cScript
      3 #include "../release/libsheepy.h"
      4 #include "inoty.h"
      5 //:end
      6 
      7 #define internal static
      8 
      9 #include <stdlib.h>
     10 #include <stdio.h>
     11 
     12 #ifndef unitTest
     13 #endif
     14 int MAIN(int ARGC, char** ARGV);
     15 
     16 int argc; char **argv;
     17 
     18 #include <unistd.h>
     19 #include <stdlib.h>
     20 
     21 #ifndef unitTest
     22 // Remove main when running the unit tests
     23 #define MAIN   main
     24 #endif
     25 int MAIN(int ARGC, char** ARGV) {
     26   char **list = NULL;
     27   int length;
     28   int i;
     29   int fd;
     30   int wd;
     31   char buffer[EVENT_BUF_LEN];
     32 
     33   argc = ARGC; argv = ARGV;;// run a commend when a c or h file is changed in current directory
     34 
     35   // Steps
     36   // check arguments
     37   // print watched folders
     38   // wait for changes and run command
     39 
     40   // check arguments
     41   if (argc < 2) {
     42     printf("Give a command to run in parameter.");
     43     printf("\n");
     44     XFAILURE;
     45   }
     46 
     47   printf("Started, will run >%s< when notified\n", argv[1]); {
     48   printf("\n");
     49 
     50   // print watched folders
     51   printf("Watching:");
     52   printf("\n");
     53   list = execOut("find . -type d");
     54   forEachCharP(list, l) {
     55     printf("%s", *l);
     56     printf("\n");
     57   }
     58 
     59   // wait for changes and run command
     60   while (1) {
     61 
     62     // creating the INOTIFY instance
     63     fd = inotiFy_init();
     64     if (fd == -1) {
     65       perror("inotiFy_init error: ");
     66     }
     67 
     68     // adding the “/tmp” directory into watch list. Here, the suggestion is to validate the existence of the directory before adding into monitoring list.
     69     // list of events: http://man7.org/linux/man-pages/man7/inotify.7.html
     70     forEachCharP(list, e) {
     71       wd = inotiFy_add_watch( fd, *e, IN_CREATE | IN_DELETE | IN_MODIFY);;
     72     }
     73 
     74     // read to determine the event change happens on “.” directory. Actually this read blocks until the change event occurs
     75     length = read( fd, buffer, EVENT_BUF_LEN );;
     76 
     77     //print '%d', length
     78 
     79     if (length == -1) {
     80       perror("read error: ");
     81     }
     82 
     83     i = 0;
     84     // actually read return the list of change events happens. Here, read the change event one by one and process it accordingly.
     85     while (( i < length )) {
     86       struct inotiFy_event *event = ( struct inotiFy_event * ) &buffer[ i ];
     87 
     88       //print 'name %s', event->name
     89       char *s = sliceS(event->name, -2, 0);
     90 
     91       if (event->len && (strEq(s, ".c") || strEq(s, ".h"))) {
     92         if ((event->mask & IN_CREATE) || (event->mask & IN_DELETE) || (event->mask & IN_MODIFY)) {
     93           system(argv[1]);
     94       }
     95         }
     96         /* if event->mask & IN_CREATE  */
     97         /*   if event->mask & IN_ISDIR */
     98         /*     printf( "New directory %s created.\n", event->name ); */
     99         /*   else */
    100         /*     printf( "New file %s created.\n", event->name ); */
    101         /* else if event->mask & IN_DELETE  */
    102         /*   if event->mask & IN_ISDIR */
    103         /*     printf( "Directory %s deleted.\n", event->name ); */
    104         /*   else */
    105         /*     printf( "File %s deleted.\n", event->name ); */
    106         /* else if event->mask & IN_MODIFY */
    107         /*   if event->mask & IN_ISDIR */
    108         /*     printf( "Directory %s modiFied.\n", event->name ); */
    109         /*   else */
    110         /*     printf( "File %s modiFied.\n", event->name ); */
    111      
    112       free(s);
    113       i += EVENT_SIZE + event->len;;
    114     }
    115 
    116 
    117     // removing the “/tmp” directory from the watch list.
    118     inotiFy_rm_watch( fd, wd );
    119 
    120     // closing the INOTIFY instance
    121     close(fd);
    122   }
    123 
    124   XSUCCESS;
    125 }
    126   }