Call this v0.1.1

.gitignore

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+slidescript
+*.o
+*.swp
+

Makefile

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+# SlideScript makefile
+# (C) Copyright 2014-2021 Chris Dorman, some rights reserved (CC-BY-SA 3.0)
+
+VERSION       = \"0.1.1\"
+EXTRA        ?= dev
+VERSION_EXTRA = \"$(EXTRA)\"
+
+PREFIX ?= /usr
+
+CC           ?= cc
+CFLAGS       += -O2 -ansi -pedantic -g -Wall -Wextra --param=ssp-buffer-size=2 -fstack-protector-all
+CPPFLAGS     += -DVERSION=$(VERSION) -DVERSION_EXTRA=$(VERSION_EXTRA) -D_FORTIFY_SOURCE=2
+LDFLAGS      += -Wl,-O1,--sort-common,--hash-style=gnu,-z,relro
+BIN          ?= slidescript
+
+OBJECTS = src/main.o src/functions.o src/util.o
+
+all: main
+
+fresh: clean all
+
+main: $(OBJECTS)
+	$(CC) $(OBJECTS) -o $(BIN) $(LDFLAGS) $(CFLAGS)
+	
+clean:
+	rm -f $(OBJECTS) $(BIN)
+	
+install:
+	install -D $(BIN) $(DESTDIR)/$(PREFIX)/bin/$(BIN)

README.md

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+SlideScript - v0.1.1-dev
+A simple, user friendly scripting language.
+====
+
+Using SlideScript
+----
+* Compile SS using the make command.
+* Modify test.ss to learn the basics of SS.
+* Run ./slidescript test.ss to execute the script.
+
+Documentation
+----
+Here is a list of functions and features that SlideScript comes with 
+at this moment!
+* Variable setting
+    variablename=variabledata
+* Commenting! Examples: 
+    # this is a comment
+* Read and writing to files! Examples:
+    write "file.txt" "This will be written to file.txt"
+    read "file.txt"
+* Print Example:
+    print "Hi everyone!"
+* Sleep (Zzz) Example (sleeps for 2 seconds):
+    sleep 2
+
+Todo list
+----
+* Add in-script functions
+* New static functions
+* Network sockets
+
+Done
+----
+* Read and write from file
+* Some simple functions
+* Variable support
+
+Changelog
+----
+
+V0.1.1
+ * Added variable handling with a buffer size of 2MB per variable, and
+   cap of 2048 variables.
+ * Now operates under the shebang!
+
+(C) Copyright 2014 Chris Dorman, some rights reserved (CC-BY-SA 3.0)

file.txt

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+This is a test file

src/deps.h

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define MAX_VAR_NAME_LEN 128
+#define MAX_VAR_DATA_LEN 2048
+#define MAXVARS 2048

src/functions.c

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+
+#include "deps.h"
+#include "functions.h"
+#include "util.h"
+
+int process_line(char *line)
+{
+    char *tok_srch = strtok(line, "=\" ");
+
+    /* if line starts with a comment, skip */
+    if(strncmp("#",tok_srch,1) == 0) 
+    {
+        return 0;
+    }
+
+    /* print function */
+    else if(strncmp("print",tok_srch,5) == 0)
+    {
+        tok_srch = strtok(NULL, "\"");
+        printf("%s\n", tok_srch);
+    } /* print function */
+
+    /* sleep function */
+    else if(strncmp("sleep",tok_srch,5) == 0)
+    {
+        tok_srch = strtok(NULL, " ");
+
+        /* if there is a new line, remove it */
+        if(tok_srch[strlen(tok_srch)-1] == '\n') 
+        {
+           tok_srch[strlen(tok_srch)-1] = 0;
+        }
+        sleep(atoi(tok_srch));
+    }
+
+    /* write */
+    else if(strncmp("write",tok_srch,5) == 0)
+    {
+        FILE* write_file = NULL;
+        /* strtok to filename of function */
+        tok_srch = strtok(NULL, "\"");
+        /* open file */
+        write_file = fopen(tok_srch, "w");
+        /* Check if file exists and can be opened */
+        if(write_file == NULL) 
+        {
+            printf("SlideScript: error: Cannot write to '%s'.\n", tok_srch);
+            return 1;
+        }
+
+        /* strtok to the content that will be written to file */
+        tok_srch = strtok(NULL, "\"");
+        tok_srch = strtok(NULL, "\"");
+        fprintf(write_file, "%s\n", tok_srch);
+        fclose(write_file);
+    } /* write function */
+
+    /* read function */
+    else if(strncmp("read",tok_srch,4) == 0)
+    {
+        char read_line[1024];
+        FILE *read_file = NULL;
+
+        /* strtok to filename of function */
+        tok_srch = strtok(NULL, "\"");
+
+        /* open file */
+        read_file = fopen(tok_srch, "r");
+
+        /* Check if file was opened successfully */
+        if(read_file == NULL) 
+        {
+            printf("SlideScript: error: failed to open '%s'.\n", tok_srch);
+            return 1;
+        }
+
+        while(fgets(read_line, sizeof(read_line), read_file) != NULL) 
+        {
+            printf("%s", read_line);
+        }
+
+        fclose(read_file);
+    } /* read function */
+
+    else if(strcmp(tok_srch, "\n") != 0 && strcmp(tok_srch, "") != 0) {
+        if(tok_srch[strlen(tok_srch)-1] == '\n')
+        {
+            return 1;
+        } 
+        else
+        {
+            int varc = get_var_count();
+            char *varname_tmp = tok_srch;
+            tok_srch = strtok(NULL, "=");
+            set_var(varc, varname_tmp, tok_srch);
+            printf("ss: var '%s' -> %s", varname_tmp, get_var_data(varname_tmp));
+        }
+    }
+
+    return 0;
+}

src/functions.h

@@ -0,0 +1 @@
+int process_line(char *line);

src/main.c

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+/*
+	SlideScript - Basic scripting for everyday use
+	(C) Copyright 2014-2021 Chris Dorman - some rights reserved (CC-BY-SA 3.0)
+
+	View read me file supplied with this software
+*/
+
+#include "deps.h"
+#include "util.h"
+#include "functions.h"
+
+int main(int argc, char **argv) 
+{
+	FILE* script;
+	char script_line[1024];
+
+    if (argc == 1)
+    {
+        script = stdin;
+    }
+    else
+    {
+        parse_args (argc, argv);
+        script = fopen (argv [1], "r");
+	}
+	
+	/* check if config opens successfully */
+	if(script == NULL) {
+		printf("Error: failed to open %s.\n", argv[1]);
+		exit(EXIT_FAILURE);
+	}
+		
+	/* Run while loop if file is empty. */
+	if(script != NULL) 
+	{
+			
+		/* parse each line from the script in order. */
+		while(fgets(script_line, sizeof(script_line), script) != NULL) 
+		{
+			process_line(script_line);
+		} /* end of while */
+	} /* file null */
+		
+    if (argc != 1 ) fclose(script);
+	exit(EXIT_SUCCESS);
+}

src/util.c

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+#include "deps.h"
+#include "util.h"
+
+char *null = "SlideScript: error: Variable not found!\n";
+
+/*#define tostring(x) #x*/
+void set_var(int index, char *varname, char *vardata)
+{
+    strcpy(svars[index].var_name, varname);
+    strcpy(svars[index].var_data, vardata);
+}
+
+char *get_var_data(char *varname)
+{
+    int xx;
+    for(xx = 0; xx < MAXVARS; xx++)
+    {
+        char *varp = svars[xx].var_name;
+        if(*varp == '\0') continue;
+        if(strcmp(varp, varname) == 0)
+        {
+            return svars[xx].var_data;
+        }
+    }
+    return null;
+}
+
+int get_var_count()
+{
+    int yy;
+    for(yy = 0; yy < MAXVARS; yy++)
+    {
+        if(strlen(svars[yy].var_name) > 0)
+        {
+            continue;
+        }
+        else
+        {
+            return yy+1;
+        }
+    }
+    return 0;
+}
+
+
+
+void parse_args(int argc, char** argv)
+{
+	/* no arguments given */
+	if(argc == 1) 
+	{
+		printf("Error: no file supplied. use %s -h for help\n", argv[0]);
+		exit(EXIT_FAILURE);
+	} 
+	/* -h flag given, show help */
+	else if(argc == 2 && strncmp("-h", argv[1], 2) == 0) 
+	{
+		printf("SlideScript - Simple, everyday use, programming script\n"
+		"Arguments:\n\n"
+		"-v\t Display version number\n"
+		"-h\t Display this help page\n"
+		"Usage: %s <filename>\n", argv[0]);
+		exit(EXIT_SUCCESS);
+	} 
+	/* -v flag given, show version */
+	else if(argc == 2 && strncmp("-v", argv[1], 2) == 0) 
+	{
+		printf("SlideScript %s-%s\n", VERSION, VERSION_EXTRA);
+		exit(EXIT_SUCCESS);
+	}
+	
+}
+

src/util.h

@@ -0,0 +1,13 @@
+struct s_variables
+{
+    char var_name [MAX_VAR_NAME_LEN];
+    char var_data [MAX_VAR_DATA_LEN];
+};
+
+typedef struct s_variables VARS;
+VARS svars[MAXVARS];
+
+void set_var(int index, char *varname, char *vardata);
+int get_var_count();
+char *get_var_data(char *varname);
+void parse_args(int argc, char** argv);

test.ss

@@ -0,0 +1,117 @@
+#!/usr/bin/slidescript
+# This is a comment
+
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+testvar1=set some data into a struct
+testvar2=multiple variables work!
+futurefeature3=add $testvar2 support :)
+
+print "Writing to file.txt in 1 second"
+sleep 1
+write "file.txt" "This is a test file"
+print "Reading from file.txt:"
+read "file.txt"