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-rw-r--r--src/user/app/yosh/main.c292
1 files changed, 292 insertions, 0 deletions
diff --git a/src/user/app/yosh/main.c b/src/user/app/yosh/main.c
new file mode 100644
index 0000000..7c9b875
--- /dev/null
+++ b/src/user/app/yosh/main.c
@@ -0,0 +1,292 @@
+#include <tce/syscall.h>
+#include <tce/vfs.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <readline.h>
+
+char *cwd;
+
+void about() {
+ printf("Trivial/Computing Environment v0.1.4 - yosh 4.\n");
+}
+
+void help(char **args) {
+ if (!args[1]) {
+ printf("Available commands: about, help, exit, ls, cd, goto.\n");
+ } else if (!strcmp(args[1], "about")) {
+ printf("Usage:\tabout\nShows some info about yosh. Very usefull.\n");
+ } else if (!strcmp(args[1], "help")) {
+ printf("Usage:\thelp\n\thelp <command>\n");
+ printf("Shows some info about the command you want, or commands in general.\n");
+ } else if (!strcmp(args[1], "exit")) {
+ printf("Usage:\texit\n");
+ printf("Exits the shell.\nWill probably make your system panic if you only have a shell running.\n");
+ } else if (!strcmp(args[1], "cd")) {
+ printf("Usage:\tcd <location>\nGoes to the location specified.\n");
+ } else if (!strcmp(args[1], "ls")) {
+ printf("Usage:\tls\n\tls <location>...\nShows the content of the current/specified directory.\n");
+ } else if (!strcmp(args[1], "goto")) {
+ printf("Usage:\tgoto <vt name>\nSwitchs focus to specified virtual terminal.\n");
+ printf("Type `ls /.ui` to see available terminals.\n");
+ } else {
+ printf("No such command: %s\n", args[1]);
+ }
+}
+
+void cd(char **args) {
+ if (!args[1]) {
+ printf("Usage: cd <directory>\n");
+ }
+ if (!strcmp(args[1], ".")) return;
+
+ char* newcwd = path_cat(cwd, args[1], 1);
+
+ file_info f;
+ int r = stat(newcwd, &f);
+ if (r == E_NOT_FOUND) {
+ printf("No such file or directory.\n");
+ } else if (r != 0) {
+ printf("Error stating: %i\n", r);
+ } else if (!(f.type & FT_DIR)) {
+ printf("Not a directory.\n");
+ } else {
+ free(cwd);
+ cwd = newcwd;
+ return;
+ }
+ free(newcwd);
+}
+
+void ls_dir(int fd) {
+ char buf[256];
+ int pos = 0;
+
+ while (read(fd, pos++, 256, buf) > 0) {
+ if ((!strcmp(buf, ".")) || (!strcmp(buf, ".."))) continue;
+
+ printf(" %s", buf);
+
+ file_info info;
+ stat_relative(fd, buf, &info);
+ if (info.type & FT_DIR) printf("/");
+ printf(" \t");
+
+ if (info.type & FT_FILE) printf("file ");
+ if (info.type & FT_DIR) printf("dir ");
+ if (info.type & FT_SYMLINK) printf("symlink ");
+ if (info.type & FT_DEV) printf("dev ");
+ if (info.type & FT_TERMINAL) printf("term ");
+
+ printf("\t");
+ if (info.type & FT_TERMINAL) {
+ printf("%ix%i", info.size >> 16, info.size & 0xFFFF);
+ } else if ((info.type & FT_DEV) == 0) {
+ printf("%i", info.size);
+ }
+
+ printf("\n");
+ }
+}
+
+void ls(char **args) {
+ if (!args[1]) {
+ int fd = open(cwd, FM_READ);
+ if (fd > 0) {
+ ls_dir(fd);
+ close(fd);
+ } else {
+ printf(" Could not open for read (%d).\n", fd);
+ }
+ } else {
+ int i;
+ for (i = 1; args[i]; i++) {
+ printf("Contents of %s :\n", args[i]);
+ char *d = path_cat(cwd, args[i], 1);
+
+ file_info i;
+ int r = stat(d, &i);
+
+ if (r == E_NOT_FOUND) {
+ printf(" No such file or directory\n");
+ } else if (r != 0) {
+ printf(" Error stating: %i\n", r);
+ } else if (!(i.type & FT_DIR)) {
+ printf(" Not a directory.\n");
+ } else {
+ int fd = open(d, FM_READ);
+ if (fd > 0) {
+ ls_dir(fd);
+ close(fd);
+ } else {
+ printf(" Could not open for read (%d).\n", fd);
+ }
+ }
+ free(d);
+ }
+ }
+}
+
+void cat(char **args) {
+ int i;
+ for (i = 1; args[i]; i++) {
+ char *d = path_cat(cwd, args[i], 0);
+ file_info info;
+ int e = stat(d, &info);
+ if (e == E_NOT_FOUND) {
+ printf("No such file: %s\n", d);
+ } else if (e < 0) {
+ printf("Error stating %s : %i\n", d, e);
+ } else if ((info.type & FT_FILE) == 0) {
+ printf("Not a file: %s\n", d);
+ } else {
+ int ff = open(d, 0);
+ char* buff = (char*)malloc(info.size);
+ read(ff, 0, info.size, buff);
+ close(ff);
+ write(term.fd, 0, info.size, buff);
+ free(buff);
+ }
+ free(d);
+ }
+}
+
+void t_goto(char **args) {
+ if (!args[1]) {
+ printf("Usage: goto <vt_name>\n");
+ return;
+ }
+ char *p = path_cat("/.ui/", args[1], 0);
+ int i;
+ if ((i = link(p, "/.dev/vgatxt", LM_OUTPUT_TO)) == 0) {
+ link("/.dev/ps2kbd", p, LM_OUTPUT_TO);
+ } else {
+ printf("Error %i\n", i);
+ }
+ free(p);
+}
+
+int main(int argc, char **sh_args) {
+ about();
+
+ cwd = strdup("/");
+
+ char *path = path_cat(sh_args[0], "..", 1);
+
+ int bg_pr[128], bg_pr_c = 0;
+
+ readline_history hist;
+ hist.str = 0; hist.max = 10;
+
+ while (1) {
+ // check for background processes that may have finished
+ int p = 0;
+ while (p < bg_pr_c) {
+ int ret = waitpid(bg_pr[p], 0);
+ if (ret != E_NOT_FINISHED) {
+ printf("(yosh) child (pid %i) exited with status %i\n", bg_pr[p], ret);
+ bg_pr_c--;
+ bg_pr[p] = bg_pr[bg_pr_c];
+ } else {
+ p++;
+ }
+ }
+
+ // show prompt
+ printf("\x1b[33m %s \x1b[1m", cwd);
+ char *s = freadline(stdin, &hist);
+ printf("\x1b[0m");
+ if (s == NULL) break;
+ if (strlen(s) == 0) continue;
+
+ char *a_c = strdup(s); // duplicate because we're gonna add '\0'es
+
+ char *c_args[16];
+ char *start = a_c, *pos = a_c;
+ int argc = 0;
+ while (*pos) {
+ if (*pos == ' ') {
+ if (pos == start) {
+ start++;
+ } else {
+ *pos = 0;
+ c_args[argc] = start;
+ argc++;
+ start = pos + 1;
+ if (argc == 14) {
+ break;
+ }
+ }
+ }
+ pos++;
+ }
+ c_args[argc++] = start;
+ c_args[argc] = 0;
+
+ if (!strcmp(c_args[0], "about")) {
+ about();
+ } else if (!strcmp(c_args[0], "help")) {
+ help(c_args);
+ } else if (!strcmp(c_args[0], "exit")) {
+ printf("Exiting the shell. See you later!\n");
+ break;
+ } else if (!strcmp(c_args[0], "cd")) {
+ cd(c_args);
+ } else if (!strcmp(c_args[0], "ls")) {
+ ls(c_args);
+ } else if (!strcmp(c_args[0], "goto")) {
+ t_goto(c_args);
+ } else if (!strcmp(c_args[0], "cat")) {
+ cat(c_args);
+ } else {
+ char **first_arg = c_args;
+
+ char *term_s = NULL;
+ int vt_fd = term.fd;
+
+ if (!strcmp(c_args[0], "on")) {
+ if (!c_args[1] || !c_args[2]) {
+ printf("Usage:\ton <vt> <command>\n");
+ continue;
+ }
+ term_s = path_cat("/.ui/", c_args[1], 1);
+ vt_fd = open(term_s, 0);
+ if (vt_fd < 0 || vt_fd == term.fd) {
+ printf("Error: cannot open terminal %s (%i)\n", term_s, vt_fd);
+ continue;
+ }
+ first_arg += 2;
+ }
+
+ char *c;
+ if (strchr(*first_arg, '/')) {
+ c = path_cat(cwd, *first_arg, 0);
+ } else {
+ c = path_cat(path, *first_arg, 0);
+ }
+ first_arg++;
+
+ int pid = run(c, (const char**)first_arg, vt_fd);
+ if (pid <= 0) {
+ if (pid == E_NOT_FOUND) {
+ printf("Error: no such file %s\n", c);
+ } else {
+ printf("Error %i\n", pid);
+ }
+ } else {
+ if (term_s == NULL) {
+ int ret = waitpid(pid, 1);
+ printf("(yosh) child (pid %i) exited with status %i\n", pid, ret);
+ } else {
+ printf("(yosh) running on terminal %s, pid:%i\n", term_s, pid);
+ bg_pr[bg_pr_c++] = pid;
+ }
+ }
+ free(c);
+ if (term_s) free(term_s);
+ }
+
+ free(a_c);
+ }
+
+ return 0;
+}
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