Merge branch 'dev' into restful-api

src/git/git.v

@@ -0,0 +1,74 @@
+module git
+
+import os
+import json
+
+pub struct GitRepo {
+pub mut:
+	// URL of the Git repository
+	url string
+	// Branch of the Git repository to use
+	branch string
+	// On which architectures the package is allowed to be built. In reality,
+	// this controls which builders will periodically build the image.
+	arch []string
+}
+
+pub fn (mut r GitRepo) patch_from_params(params map[string]string) {
+	$for field in GitRepo.fields {
+		if field.name in params {
+			$if field.typ is string {
+				r.$(field.name) = params[field.name]
+				// This specific type check is needed for the compiler to ensure
+				// our types are correct
+			} $else $if field.typ is []string {
+				r.$(field.name) = params[field.name].split(',')
+			}
+		}
+	}
+}
+
+pub fn read_repos(path string) ?map[string]GitRepo {
+	if !os.exists(path) {
+		mut f := os.create(path) ?
+
+		defer {
+			f.close()
+		}
+
+		f.write_string('{}') ?
+
+		return {}
+	}
+
+	content := os.read_file(path) ?
+	res := json.decode(map[string]GitRepo, content) ?
+
+	return res
+}
+
+pub fn write_repos(path string, repos &map[string]GitRepo) ? {
+	mut f := os.create(path) ?
+
+	defer {
+		f.close()
+	}
+
+	value := json.encode(repos)
+	f.write_string(value) ?
+}
+
+pub fn repo_from_params(params map[string]string) ?GitRepo {
+	mut repo := GitRepo{}
+
+	// If we're creating a new GitRepo, we want all fields to be present before
+	// "patching".
+	$for field in GitRepo.fields {
+		if field.name !in params {
+			return error('Missing parameter: ${field.name}.')
+		}
+	}
+	repo.patch_from_params(params)
+
+	return repo
+}