Add support for toml-based config file

4 files changed, 122 insertions, 4 deletions

diff --git a/src/opendeco-cli.c b/src/opendeco-cli.c
index 4e21405..e200fcd 100644
--- a/src/opendeco-cli.c
+++ b/src/opendeco-cli.c
@@ -2,6 +2,7 @@
 
 #include <argp.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "opendeco-cli.h"
 
@@ -47,7 +48,10 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
         arguments->time = arg ? atof(arg) : -1;
         break;
     case 'g':
-        arguments->gas = arg;
+        if (arguments->gas)
+            free(arguments->gas);
+
+        arguments->gas = strdup(arg);
         break;
     case 'p':
         arguments->SURFACE_PRESSURE = arg ? atof(arg) : -1;
@@ -62,7 +66,10 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state)
         arguments->gfhigh = arg ? atoi(arg) : 100;
         break;
     case 'G':
-        arguments->decogasses = arg;
+        if (arguments->decogasses)
+            free(arguments->decogasses);
+
+        arguments->decogasses = strdup(arg);
         break;
     case 'S':
         arguments->SWITCH_INTERMEDIATE = 0;
diff --git a/src/opendeco-conf.c b/src/opendeco-conf.c
new file mode 100644
index 0000000..e6b957f
--- /dev/null
+++ b/src/opendeco-conf.c
@@ -0,0 +1,101 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+#include "opendeco-conf.h"
+#include "../toml/toml.h"
+
+int opendeco_conf_parse(const char *confpath, struct arguments *arguments)
+{
+    FILE *fp;
+    char errbuf[200];
+
+    /* open config file */
+    fp = fopen(confpath, "r");
+
+    if (!fp)
+        return -1;
+
+    /* parse config */
+    toml_table_t *od_conf = toml_parse_file(fp, errbuf, sizeof(errbuf));
+    fclose(fp);
+
+    if (!od_conf)
+        return -1;
+
+    fwprintf(stderr, L"Picked up options from %s\n", confpath);
+
+    /* set options in arguments */
+    toml_table_t *dive = toml_table_in(od_conf, "dive");
+
+    if (dive) {
+        toml_datum_t g = toml_string_in(dive, "gas");
+
+        if (g.ok) {
+            if (arguments->gas)
+                free(arguments->gas);
+
+            arguments->gas = g.u.s;
+        }
+
+        toml_datum_t p = toml_double_in(dive, "surface_pressure");
+
+        if (p.ok)
+            arguments->SURFACE_PRESSURE = p.u.d;
+
+        toml_datum_t r = toml_double_in(dive, "rmv");
+
+        if (r.ok)
+            arguments->RMV_DIVE = r.u.d;
+    }
+
+    toml_table_t *deco = toml_table_in(od_conf, "deco");
+
+    if (deco) {
+        toml_datum_t L = toml_int_in(deco, "gflow");
+
+        if (L.ok)
+            arguments->gflow = L.u.i;
+
+        toml_datum_t H = toml_int_in(deco, "gfhigh");
+
+        if (H.ok)
+            arguments->gfhigh = H.u.i;
+
+        toml_datum_t G = toml_string_in(deco, "decogasses");
+
+        if (G.ok) {
+            if (arguments->decogasses)
+                free(arguments->decogasses);
+
+            arguments->decogasses = G.u.s;
+        }
+
+        toml_datum_t _6 = toml_bool_in(deco, "last_stop_at_six");
+
+        if (_6.ok)
+            arguments->LAST_STOP_AT_SIX = _6.u.b;
+
+        toml_datum_t S = toml_bool_in(deco, "switch_intermediate");
+
+        if (S.ok)
+            arguments->SWITCH_INTERMEDIATE = S.u.b;
+
+        toml_datum_t R = toml_double_in(deco, "rmv");
+
+        if (R.ok)
+            arguments->RMV_DECO = R.u.d;
+    }
+
+    toml_table_t *conf = toml_table_in(od_conf, "conf");
+
+    if (conf) {
+        toml_datum_t T = toml_bool_in(conf, "show_travel");
+
+        if (T.ok)
+            arguments->SHOW_TRAVEL = T.u.b;
+    }
+
+    toml_free(od_conf);
+    return 0;
+}
diff --git a/src/opendeco-conf.h b/src/opendeco-conf.h
index cb5b863..48b1ad0 100644
--- a/src/opendeco-conf.h
+++ b/src/opendeco-conf.h
@@ -21,4 +21,6 @@ struct arguments {
     int SHOW_TRAVEL;
 };
 
+int opendeco_conf_parse(const char *confpath, struct arguments *arguments);
+
 #endif /* end of include guard: OPENDECOCONF_H */
diff --git a/src/opendeco.c b/src/opendeco.c
index 862923e..029a81f 100644
--- a/src/opendeco.c
+++ b/src/opendeco.c
@@ -138,13 +138,16 @@ int main(int argc, char *argv[])
     setlocale(LC_ALL, "en_US.utf8");
 
     /* argp */
+    char *gas_default = strdup("Air");
+    char *decogasses_default = strdup("");
+
     struct arguments arguments = {
         .depth = -1,
         .time = -1,
-        .gas = "Air",
+        .gas = gas_default,
         .gflow = 30,
         .gfhigh = 75,
-        .decogasses = "",
+        .decogasses = decogasses_default,
         .SURFACE_PRESSURE = SURFACE_PRESSURE_DEFAULT,
         .SWITCH_INTERMEDIATE = SWITCH_INTERMEDIATE_DEFAULT,
         .LAST_STOP_AT_SIX = LAST_STOP_AT_SIX_DEFAULT,
@@ -153,6 +156,7 @@ int main(int argc, char *argv[])
         .SHOW_TRAVEL = SHOW_TRAVEL_DEFAULT,
     };
 
+    opendeco_conf_parse("opendeco.toml", &arguments);
     opendeco_argp_parse(argc, argv, &arguments);
 
     /* apply global options */
@@ -213,6 +217,10 @@ int main(int argc, char *argv[])
     wprintf(L"\nNDL: %i TTS: %i TTS @+5: %i\n", (int) floor(di.ndl), (int) ceil(di.tts), (int) ceil(di_plus5.tts));
     print_planfoot(&ds);
 
+    /* cleanup */
     free(deco_gasses);
+    free(arguments.gas);
+    free(arguments.decogasses);
+
     return 0;
 }