X-Git-Url: https://harrygodden.com/git/?p=csRadar.git;a=blobdiff_plain;f=csrOpt.h;fp=csrOpt.h;h=9195790ab34253f948eb81853ea79c1d9c6485de;hp=0000000000000000000000000000000000000000;hb=1d2752b69b6285d5eb6436728c6cf84228a9ccde;hpb=b95752d31a7b1e224b227093f13a72d8c2b7f34b

diff --git a/csrOpt.h b/csrOpt.h
new file mode 100644
index 0000000..9195790
--- /dev/null
+++ b/csrOpt.h
@@ -0,0 +1,175 @@
+// Supported:
+// -abc
+// -a value
+// -ab value
+//
+// --long-value=test
+// regular_thing
+
+static int csr_argi = 1;
+static int csr_argj = 1;
+static int csr_argc = 0;
+static int csr_consume_next = 0;
+static char **csr_argv;
+
+// Will return 0 if exhausted
+int csr_argp( int argc, char *argv[] )
+{
+	csr_argv = argv;
+	csr_argc = argc;
+
+	static int delta_i = 0;
+	static int delta_j = 0;
+	
+	if( csr_argj != 1 && !csr_argv[ csr_argi ][ csr_argj ] )
+	{
+		csr_argj = 1;
+		csr_argi ++;		
+	}
+
+	if( csr_consume_next )
+	{
+		csr_consume_next = 0;
+		csr_argi ++;
+	}
+
+	if( csr_argi >= argc )
+		return 0;
+
+	if( (delta_i == csr_argi) && (delta_j == csr_argj) )
+	{
+		char *cur = &csr_argv[ csr_argi ][ csr_argj ];
+	
+		if( *cur != '-' )
+		{
+			fprintf( stderr, "Unknown opt '-%c'\n", *cur );
+		}
+		else
+		{
+			fprintf( stderr, "Unknown opt '--%s'\n", cur + 1 );
+		}
+		
+		exit(0);
+	}
+	
+	delta_i = csr_argi;
+	delta_j = csr_argj;
+
+	return 1;
+}
+
+// Example: see if -c is set
+int csr_opt( char c )
+{
+	char *carg = csr_argv[ csr_argi ];
+
+	if( carg[0] == '-' )
+	{
+		if( carg[1] == '-' )
+			return 0;
+		
+		if( carg[ csr_argj ] == c )
+		{
+			csr_argj ++;
+			
+			return 1;
+		}
+	}
+	
+	return 0;
+}
+
+// Example: get -c *value*
+char *csr_opt_arg( char c )
+{
+	if( csr_opt( c ) )
+	{
+		if( csr_argi < csr_argc-1 )
+		{
+			if( csr_argv[ csr_argi + 1 ][0] != '-' )
+			{
+				csr_consume_next = 1;
+				return csr_argv[ csr_argi + 1 ];
+			}
+		}
+		
+		fprintf( stderr, "Option '%c' requires argument!\n", c );
+		exit(0);
+	}
+	
+	return NULL;
+}
+
+// Example see if --big is set
+int csr_long_opt( char *name )
+{
+	char *carg = csr_argv[ csr_argi ];
+	
+	if( carg[0] == '-' )
+	{
+		if( carg[1] == '-' )
+		{
+			if( !strcmp( name, carg+2 ) )
+			{
+				csr_consume_next = 1;
+				return 1;
+			}
+		}
+	}
+	
+	return 0;
+}
+
+// Example: get --big=value
+char *csr_long_opt_arg( char *name )
+{
+	char *carg = csr_argv[ csr_argi ];
+	
+	if( carg[0] == '-' )
+	{
+		if( carg[1] == '-' )
+		{
+			int k = 2; int set = 0;
+			while( carg[ k ] )
+			{
+				if( carg[ k ] == '=' )
+				{
+					set = 1;
+					break;
+				}
+					
+				k ++;
+			}
+			
+			if( !strncmp( name, carg+2, k-2 ) )
+			{
+				csr_consume_next = 1;
+				
+				// the rest
+				if( set )
+				{
+					return carg + k + 1;
+				}
+				else
+				{
+					fprintf( stderr, "Long option '%s' requires argument\n", name );
+				}
+			}			
+		}
+	}
+	
+	return NULL;
+}
+
+char *csr_arg(void)
+{
+	char *carg = csr_argv[ csr_argi ];
+	
+	if( carg[0] != '-' )
+	{
+		csr_argi ++;
+		return carg;
+	}
+	
+	return NULL;
+}