replace tsarc with a c program

1 files changed, 152 insertions, 0 deletions

diff --git a/src/tsarc.c b/src/tsarc.c
new file mode 100644
index 0000000..27ab941
--- /dev/null
+++ b/src/tsarc.c
@@ -0,0 +1,152 @@
+#include <fcntl.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#define PIPE_PATH "/tmp/tsarc.pipe"
+#define STACK_LEN(arr) (sizeof(arr)/sizeof(arr[0]))
+
+const char help_text[] =
+  "usage: tsarc [command] ...\n"
+  "commands:\n"
+  "\tconfig - configure tsarbar settings\n"
+  "\tset - set component data and options\n"
+  "\tlayout - define the layout of the bar\n"
+  "\n"
+  "config:\n"
+  "usage: tsarc config (-[property] [value] ...)\n"
+  "\t-height - height of the bar, in pixels\n"
+  "\t-font - font to use\n"
+  "\t-gap - gap between components, in pixels\n"
+  "\t-foreground, -fg - foreground color, as a hex code (e.g. #FFAA44)\n"
+  "\t-background, -bg - background color, as a hex code (e.g. #FFAA44)\n"
+  "\n"
+  "set:\n"
+  "usage: tsarc set [variable] (-[property] [value] ...)\n"
+  "\t-text - text of the component\n"
+  "\t-fg - foreground color, as a hex code (e.g. #FFAA44)\n"
+  "\t-bg - background color, as a hex code (e.g. #FFAA44)\n"
+  "\t-margin-left - margin to the left, in pixels\n"
+  "\t-margin-right - margin to the right, in pixels\n"
+  "\t-margin - sets both -margin-left and -margin-right\n"
+  "\n"
+  "layout:\n"
+  "usage: tsarc layout (-[side] [component list] ...)\n"
+  "\t-left, -center, -right - valid sides\n"
+;
+
+const char *valid_config_properties[] = {
+  "-height",
+  "-font",
+  "-gap",
+  "-fg",
+  "-bg",
+  "-foreground",
+  "-background",
+};
+
+const char *valid_set_properties[] = {
+  "-text",
+  "-fg",
+  "-bg",
+  "-margin-left",
+  "-margin-right",
+  "-margin",
+};
+
+void show_help(FILE* file) {
+  fputs(help_text, file);
+}
+
+bool verify_argument_spelling(const char* arg, const char** valid, int validc) {
+  for (int i = 0; i < validc; i++) {
+    if (strcmp(arg, valid[i]) == 0) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void die(const char* fmt, ...) {
+  va_list args;
+  va_start(args, fmt);
+  vfprintf(stderr, fmt, args);
+  va_end(args);
+
+  putc('\n', stderr);
+
+  show_help(stderr);
+
+  exit(1);
+}
+
+int main(int argc, const char* argv[]) {
+  if (argc < 2) {
+    die("error: missing a command");
+  }
+
+  const char* cmd = argv[1];
+
+  if (strcmp(cmd, "-h") == 0 || strcmp(cmd, "--help") == 0) {
+    show_help(stdout);
+    return 0;
+  }
+
+  if (strcmp(cmd, "config") == 0) {
+    if (argc < 3) {
+      die("error: missing a config property");
+    }
+
+    verify_argument_spelling(
+      argv[2],
+      valid_config_properties,
+      STACK_LEN(valid_config_properties)
+    );
+  }
+  if (strcmp(cmd, "set") == 0) {
+    if (argc < 3) {
+      die("error: missing a component name");
+    }
+    if (argc < 4) {
+      die("error: missing a component property");
+    }
+
+    verify_argument_spelling(
+      argv[3],
+      valid_set_properties,
+      STACK_LEN(valid_set_properties)
+    );
+  }
+
+  int cmd_len = 0;
+  for (int i = 1; i < argc; i++) {
+    cmd_len += strlen(argv[i]);
+  }
+  
+  cmd_len += argc;
+  char* cmd_str = (char*)malloc(sizeof(char) * (cmd_len + 1));
+
+  int start = 0;
+  for (int i = 1; i < argc; i++) {
+    size_t arg_len = strlen(argv[i]);
+    memcpy(cmd_str + start, argv[i], arg_len);
+    cmd_str[start + arg_len] = '\201';
+    start += arg_len + 1;
+  }
+
+  cmd_str[cmd_len-1] = '\n';
+  cmd_str[cmd_len] = '\0';
+  
+  mkfifo(PIPE_PATH, 0666);
+  FILE* named_pipe = fopen(PIPE_PATH, "w");
+
+  fwrite(cmd_str, sizeof(char), cmd_len, named_pipe);
+
+  fclose(named_pipe);
+
+  return 0;
+}