start snag program and defining package format

3 files changed, 78 insertions, 0 deletions

diff --git a/snag/getpkginfo.sh b/snag/getpkginfo.sh
new file mode 100755
index 0000000..0650740
--- /dev/null
+++ b/snag/getpkginfo.sh
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+# reads a package description script and outputs the attributes in a format easy
+# for the snag program to read
+
+if [ -z "$1" ]; then
+    echo "Usage: $0 <description script>" >&2
+    exit 1
+fi
+
+# load the description script
+. $1
+
+# echo package properties
+echo ID   $pkg_id
+echo NAME $pkg_name
+echo DESC $pkg_desc
diff --git a/snag/main.c b/snag/main.c
index 8a3b3be..9eacf33 100644
--- a/snag/main.c
+++ b/snag/main.c
@@ -1,3 +1,33 @@
+#include <stdio.h>
+#include <stdbool.h>
+
+#define DESC_DIR "../snaggies"
+
+typedef struct {
+	char* id;
+	char* name;
+	char* desc;
+} package_info_t;
+
+void subcmd_install(char* pkgs[], size_t count);
+bool load_package_info(package_info_t* info, char* pkgid);
+
 int main(int argc, char* argv[]) {
+
+	// run install subcommand with each argument as a package
+	subcmd_install(argv+1, argc-1);
+
 	return 0;
 }
+
+void subcmd_install(char* pkgs[], size_t count) {
+
+	// install each package listed
+	for (int i = 0; i < count; ++i) {
+
+		char* package = pkgs[i];
+		printf("Installing '%s'\n", package);
+
+		// load package description
+	}
+}
diff --git a/snag/readme.txt b/snag/readme.txt
new file mode 100644
index 0000000..ef15404
--- /dev/null
+++ b/snag/readme.txt
@@ -0,0 +1,31 @@
+# SNAG Package Manager
+
+## Useful Subcommands
+`install`/`inst` - install the specified package(s) (default)
+`remove`         - uninstall the specified package(s)
+`upgrade/'up`    - upgrade the package database
+`find`/`search`  - list packages whose metadata matches specified search string
+`info`/`desc`    - describe the metadata of the specified package(s)
+
+`files`          - list the installed files of the specified package(s)
+`log`            - open your pager to the build log of the specified package
+`reason`         - list why this package is installed (manually installed, as a dependency, from a group)
+
+## Terminology
+"Package Database"             - the directory containing package descriptions
+"Install Database"             - the directory containing information on installed package
+"Package Description"          - the directory and script containing build instructions for a package
+"Package Info/Metadata"        - the metadata encoded in the package description
+"Package Attribute"            - a single key value property of the package info
+
+## Package Format
+Each package has a directory in the package database, named by its `id`.
+Inside each package directory is the description script named `{id}.sh`
+The description script should have functions for `configure`, `build`, and `install`
+The description script should define variables for attributes with the name `pkg_{attr}`
+> We're still deciding if we want the metadata to be split from the instruction in separate file(s).
+
+Packages have the following attributes:
+`id` - the identifier name of the package. everything uses this
+`name` - the display name of package
+`desc` - the short description of the package