First commandline argument parsing with libargtable2.

client/clcc.c

@@ -23,67 +23,124 @@
 // External functions to control the ledcube.
 extern void lc_setFrame(unsigned long);
 extern void lc_setMode(int);
-extern int lc_saveFrame(unsigned long, int, int);
+extern int  lc_saveFrame(unsigned long, int, int);
 extern void lc_init(void);
 extern void lc_close(void);
 
 int main(int argc, char **argv)
 {
 
+    // parameter structures
+    struct arg_lit  *param_stop   = arg_lit0("p", "stop", "stop animation");
+    struct arg_lit  *param_single = arg_lit0("i", "single", "single animation");
+    struct arg_lit  *param_loop   = arg_lit0("l", "loop", "loop animation");
+    struct arg_int  *param_frame  = arg_int0("m", "frame", "<n>", "frame data");
+    struct arg_int  *param_pos    = arg_int0("o", "pos", "<n>", "frame pos in eeprom");
+    struct arg_int  *param_delay  = arg_int0("y", "delay", "<n>", "frame delay in eeprom");
+    struct arg_lit  *param_save   = arg_lit0("s", "save", "save one frame to the EEPROM");
+    //struct arg_lit  *param_tty    = arg_lit0("t", "terminal", "terminal mode");
+    //struct arg_lit  *param_daemon = arg_lit0("d", "daemon", "daemon mode");
+    struct arg_lit  *param_help   = arg_lit0("h", "help", "show help");
+    struct arg_file *param_file   = arg_filen("f", "ihex-file","<file>", 0, 1, "iHex input file to write to the EEPROM");
+    struct arg_end  *param_end    = arg_end(20);
+
+    // default parameter
+    param_frame->ival[0] = 0x00000000;
+    param_pos->ival[0]   = 0;
+    param_delay->ival[0] = 1;
+
+    // argtable array
+    void *argtable[] = {
+        param_stop,
+        param_single,
+        param_loop,
+        param_frame,
+        param_pos,
+        param_delay,
+        param_save,
+        param_file,
+        //param_tty,
+        //param_daemon,
+        param_help,
+        param_end
+    };
+
+    // parse the commandline arguments
+    int nerrors = arg_parse(argc,argv,argtable);
+
+    if (arg_nullcheck(argtable) != 0)
+    {
+        printf("error: insufficient memory\n");
+        arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
+        return 0;
+    }
+
+    if (nerrors == 0 && param_help->count > 0)
+    {
+        printf("Usage: ./clcc <OPTIONS>\n");
+        arg_print_glossary(stdout, argtable, "\t%-25s %s\n");
+        arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
+        return 0;
+
+    }
+    // parsing failed or to less parameter given
+    if (nerrors > 0
+        || argc < 2
+        || (param_save->count > 0 && (param_pos->count == 0 || param_delay->count == 0 || param_frame->count == 0))
+       )
+    {
+        arg_print_errors(stdout,param_end,"clcc");
+        printf("\nUsage: ./clcc <OPTIONS>\n");
+        arg_print_syntaxv(stdout,argtable,"\n");
+        arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
+        return -1;
+    }
+
     lc_init();
 
-    if (argc == 2 && !strcmp((char*)argv[1], "--stop"))
+    if (param_stop->count > 0)
     {
         printf("stop animation loop\n");
         lc_setMode(MODE_ANIMATION_STOP);
     }
-    else if (argc == 2 && !strcmp((char*)argv[1], "--loop"))
+    else if (param_loop->count > 0)
     {
         printf("starting animation loop\n");
         lc_setMode(MODE_ANIMATION_LOOP);
     }
-    else if (argc == 2 && !strcmp((char*)argv[1], "--single"))
+    else if (param_single->count > 0 )
     {
         printf("starting animation as single shot\n");
         lc_setMode(MODE_ANIMATION_SINGLE);
     }
-    else if (argc == 3 && !strcmp((char*)argv[1], "--view"))
+    else if (param_save->count > 0
+                && param_pos->count > 0
+                && param_delay->count > 0
+                && param_frame->count > 0)
     {
-
-        lc_setMode(MODE_ANIMATION_STOP);
-        unsigned int frame = 0;
-        if ( sscanf((char*)argv[2], "0x%08x", &frame) )
-        {
-            printf("view frame: data=0x%08x\n", frame);
-            lc_setFrame(frame);
-        }
-    }
-    else if (argc == 5 && !strcmp((char*)argv[1], "--save"))
-    {
-
         lc_setMode(MODE_ANIMATION_STOP);
 
-        // TODO parse commandline parameters
+        int frame = param_frame->ival[0];
-        unsigned int pos = 0;
+        int delay = param_delay->ival[0];
-        if ( sscanf((char*)argv[2], "%d", &pos) )
+        int pos = param_pos->ival[0];
-        {
+        printf("saving frame: index=%d delay=%d frame=0x%08x\n", pos, delay, frame);
-            unsigned int delay = 0;
+        lc_saveFrame(frame, delay, pos);
-            if ( sscanf((char*)argv[3], "%d", &delay) )
-            {
-                unsigned int frame = 0;
-                if ( sscanf((char*)argv[4], "0x%08x", &frame) )
-                {
-                    printf("saving frame: index=%d delay=%d frame=0x%08x\n", pos, delay, frame);
-                    //lc_setFrame(frame);
-                    lc_saveFrame(frame, delay, pos);
-                }
-            }
-        }
 
     }
+    else if (param_frame->count > 0)
+    {
+        lc_setMode(MODE_ANIMATION_STOP);
+        int frame = param_frame->ival[0];
+        printf("view frame: data=0x%08x\n", frame);
+        lc_setFrame(frame);
+    }
+
+    //printf("file[%d]=%s\n",i,file->filename[i]);*/
 
     lc_close();
 
+    arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
+
     return 0;
 }