Server: Read in former "config" data as normal server god commands.

[plomrogue] / src / client / parse.c

diff --git a/src/client/parse.c b/src/client/parse.c
new file mode 100644 (file)
index 0000000..2767c46
--- /dev/null
+++ b/src/client/parse.c
@@ -0,0 +1,120 @@
+/* src/client/parse.c */
+
+#define _POSIX_C_SOURCE 200809L /* strdup() */
+#include "parse.h"
+#include <stddef.h> /* size_t, NULL */
+#include <stdio.h> /* FILE, snprintf() */
+#include <stdint.h> /* uint8_t, uint32_t */
+#include <stdlib.h> /* free() */
+#include <string.h> /* strdup(), strlen() */
+#include <unistd.h> /* access(), F_OK */
+#include "../common/parse_file.h" /* set_err_line_options(), err_line_inc(),
+                                   * err_line_zero(), token_from_line()
+                                   */
+#include "../common/readwrite.h" /* try_fopen(),try_fclose(),textfile_width() */
+#include "../common/rexit.h" /* exit_err(), exit_trouble() */
+#include "../common/try_malloc.h" /* try_malloc() */
+
+
+
+extern void parse_file(char * path, void (* token_to_entry) (char *, char *))
+{
+    char * f_name = "read_new_config_file()";
+    char * prefix = "Failed reading config file: \"";
+    char * affix = "\". ";
+    size_t size = strlen(prefix) + strlen(path) + strlen(affix) + 1;
+    char * errline_intro = try_malloc(size, f_name);
+    int test = snprintf(errline_intro, size, "%s%s%s", prefix, path, affix);
+    exit_trouble(test < 0, f_name, "snprintf()");
+    exit_err(access(path, F_OK), errline_intro);
+    FILE * file = try_fopen(path, "r", f_name);
+    uint32_t linemax = textfile_width(file);
+    char * errline_line = try_malloc(linemax + 1, f_name);
+    set_err_line_options(errline_intro, errline_line, 1);
+    err_line_zero();
+    err_line(0 == linemax, "File is empty.");
+    char * token0 = NULL; /* For final token_to_entry() if while() stagnates. */
+    char * token1 = NULL;
+    char * err_val = "No value given.";
+    while (try_fgets(errline_line, linemax + 1, file, f_name))
+    {
+        err_line_inc();
+        // err_line(UINT32_MAX == err_line_count, "Line reaches max lines limit.");
+        char * line_copy = strdup(errline_line);
+        token0 = token_from_line(line_copy);
+        if (token0)
+        {
+            err_line(0 == (token1 = token_from_line(NULL)), err_val);
+            token_to_entry(token0, token1);
+            token0 = NULL;
+        }
+        free(line_copy);
+    }
+    token_to_entry(token0, token1);
+    try_fclose(file, f_name);
+    free(errline_line);
+    free(errline_intro);
+}
+
+
+
+extern void parsetest_defcontext(uint8_t flags)
+{
+    err_line(!(flags & EDIT_STARTED),"Outside appropriate definition context.");
+}
+
+
+
+extern void parsetest_too_many_values()
+{
+    err_line(NULL != token_from_line(NULL), "Too many values.");
+}
+
+
+
+extern void parse_id_uniq(int test)
+{
+    err_line(0 != test, "Declaration of ID already used.");
+}
+
+
+
+extern void parse_unknown_arg()
+{
+    err_line(1, "Unknown argument.");
+}
+
+
+
+extern char * parse_init_entry(uint8_t * flags, size_t size)
+{
+    char * f_name = "parse_init_entry()";
+    *flags = EDIT_STARTED;
+    char * p = try_malloc(size, f_name);
+    memset(p, 0, size);
+    return p;
+}
+
+
+
+extern uint8_t parse_flagval(char * token0, char * token1, char * comparand,
+                             uint8_t * flags, uint8_t set_flag, char type,
+                             char * element)
+{
+    if (parse_val(token0, token1, comparand, type, element))
+    {
+        parsetest_defcontext(*flags);
+        *flags = *flags | set_flag;
+        return 1;
+    }
+    return 0;
+}
+
+
+
+extern void parse_and_reduce_to_readyflag(uint8_t * flags, uint8_t ready_flag)
+{
+    char * err_fin = "Last definition block not finished yet.";
+    err_line((*flags & ready_flag) ^ ready_flag, err_fin);
+    *flags = ready_flag;
+}