add sourcing

1 files changed, 23 insertions, 0 deletions

diff --git a/src/exec.c b/src/exec.c
index e3ea28f..86175a9 100644
--- a/src/exec.c
+++ b/src/exec.c
@@ -8,6 +8,7 @@
 
 #include "syntax.h"
 #include "utils.h"
+#include "stages.h"
 
 void execute_command_pipeline(Pipeline pipeline, int stdin_fd, int stdout_fd, bool wait_here, int* pgid, ShellState* shstate);
 
@@ -25,6 +26,24 @@ MaybeStrPair parse_assignment(char* token) {
 }
 
 
+void source_script(char* fname, ShellState* shstate) {
+    // TODO: add stdin/out (to other builtins too, actually)
+    FILE* fp = fopen(fname, "r");        // TODO: checks
+    if (fp == 0) exit(1);
+
+    char* line = NULL;
+    size_t len = 0;
+
+    while (getline(&line, &len, fp) != -1) {
+		line[strcspn(line, "\r\n")] = '\0';
+        execute_line(line, shstate);
+    }
+    free(line);
+    fclose(fp);
+
+}
+
+
 bool handle_builtin(ExecutableCommand cmd, ShellState* shstate) {
     MaybeStrPair m_assignment;
     assert(cmd.args[0] != NULL); 
@@ -48,6 +67,10 @@ bool handle_builtin(ExecutableCommand cmd, ShellState* shstate) {
         assert(m_assignment.some);
         set_map_pair(&shstate->aliases, m_assignment.value); 
         return true;
+    } else if (strcmp(cmd.args[0], "source") == 0) {
+        assert(cmd.args[1] != NULL);
+        source_script(cmd.args[1], shstate);
+        return true;
     } else if (strcmp(cmd.args[0], "export") == 0) {
         m_assignment = parse_assignment(cmd.args[1]);
         assert(m_assignment.some);