Add comment to processess array.

[wsti_so.git] / src / process1.c

diff --git a/src/process1.c b/src/process1.c
index 695e887dac25e846a2ddc8476791e587ba5326f2..d514b03e38daa000c379cc21e9c43212576eb2c6 100644 (file)
--- a/src/process1.c
+++ b/src/process1.c
@@ -2,12 +2,15 @@
 #include <stdlib.h>
 #include <string.h>
 
+/* open/read/write/close */
+#include <fcntl.h>
+
 /** If buffer is too small to hold entire string, it is incremented by this value */
 #define BUFFER_STEP 16
 
 /**
- * Program reads entire lines of text from the standard input and returns them
- * on the standard output without changing anything.
+ * Program reads entire lines of text from the standard input and pass them
+ * to the process2 using created pipe.
  */
 int main(void) {
        /** Currently fetched from stdin character */
@@ -19,13 +22,26 @@ int main(void) {
        /** Current buffer length*/
        int buffer_length = 0;
 
-       /* Index of the current character */
+       /** Index of the current character */
        int i = 0;
-       
-       /** Temporary buffer used as a proxy between
+
+       /**
+        * Temporary buffer used as a proxy between
         * checking memory allocation and copying data to real buffer 
         */
-       char *tmp = NULL;
+       char * tmp = NULL;
+
+       /** Named pipe used to communnicate with process2 */
+       char * write_pipe = "/tmp/process1pipe";
+
+       /** File descriptor of pipe */
+       int file_descriptor;
+
+       mkfifo(write_pipe, 0666);
+
+       file_descriptor = open(write_pipe, O_WRONLY);
+
+       fprintf(stderr, "[%s] Init!\n", "process1");
 
        do {
                c = fgetc(stdin);
@@ -48,14 +64,17 @@ int main(void) {
                }
 
                /*
-                * If there were no errors parse data.
+                * If there were no errors or it was not just an empty newline:
+                * parse data.
                 */
-               if (c != EOF) {
+               if (c != EOF || ((i == 0) && (c == 10))) {
                        /* If newline has been found
                         * return entire string and release the memory
                         */
-                       if (c == 10) {
-                               fprintf(stdout, "%s\n", buffer);
+                       if (c == 10 && (i != 0)) {
+                               buffer[i] = '\n';
+                               write(file_descriptor, buffer, strlen(buffer));
+                               fprintf(stderr, "[%s] buffer: %s/%d\n", "process1", buffer, strlen(buffer));
 
                                buffer_length = 0;
                                i = 0;
@@ -71,7 +90,7 @@ int main(void) {
                                buffer = tmp;
                                buffer[i] = c;
 
-                               /* Used for debug..*/
+                               /* Used only for debugging..*/
                                /*
                                printf("c: %c/%d, i: %d, bl: %d\n", c, c, i, buffer_length);
                                */
@@ -79,7 +98,10 @@ int main(void) {
                        }
                }
        } while(c != EOF);
-       
+
+       close(write_pipe);
+       unlink(write_pipe);
+
        if (buffer) {
                free(buffer);
                buffer = NULL;