From af3dd29ddc3b4edd60fb9fed19fc2d0995e80346 Mon Sep 17 00:00:00 2001
From: "Robert C. Helling" <helling@atdotde.de>
Date: Thu, 15 Dec 2016 23:22:54 +0100
Subject: [PATCH 2/2] Indicate a repetitive dive in the diveplan
To: subsurface@subsurface-divelog.org

Fixes #1095

Signed-off-by: Robert C. Helling <helling@atdotde.de>
---
 core/dive.h     |  1 +
 core/divelist.c |  9 ++++++---
 core/divelist.h |  2 +-
 core/planner.c  | 18 +++++++++++-------
 4 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/core/dive.h b/core/dive.h
index 4a314da..aa6352d 100644
--- a/core/dive.h
+++ b/core/dive.h
@@ -860,6 +860,7 @@ struct diveplan {
 	short vpmb_conservatism;
 	struct divedatapoint *dp;
 	int eff_gflow, eff_gfhigh;
+	bool repetitive;
 };
 
 struct divedatapoint *plan_add_segment(struct diveplan *diveplan, int duration, int depth, int cylinderid, int po2, bool entered);
diff --git a/core/divelist.c b/core/divelist.c
index fa100c2..f4762dd 100644
--- a/core/divelist.c
+++ b/core/divelist.c
@@ -360,7 +360,8 @@ int get_divesite_idx(struct dive_site *ds)
 static struct gasmix air = { .o2.permille = O2_IN_AIR, .he.permille = 0 };
 
 /* take into account previous dives until there is a 48h gap between dives */
-double init_decompression(struct dive *dive)
+/* return true if this is a repetitive dive */
+bool init_decompression(struct dive *dive)
 {
 	int i, divenr = -1;
 	unsigned int surface_time;
@@ -369,7 +370,7 @@ double init_decompression(struct dive *dive)
 	double surface_pressure;
 
 	if (!dive)
-		return 0.0;
+		return false;
 
 	surface_pressure = get_surface_pressure_in_mbar(dive, true) / 1000.0;
 	divenr = get_divenr(dive);
@@ -445,7 +446,9 @@ double init_decompression(struct dive *dive)
 		dump_tissues();
 #endif
 	}
-	return tissue_tolerance_calc(dive, surface_pressure);
+	// I do not dare to remove this call. We don't need the result but it might have side effects. Bummer.
+	tissue_tolerance_calc(dive, surface_pressure);
+	return deco_init;
 }
 
 void update_cylinder_related_info(struct dive *dive)
diff --git a/core/divelist.h b/core/divelist.h
index 7a35fb2..f36766f 100644
--- a/core/divelist.h
+++ b/core/divelist.h
@@ -14,7 +14,7 @@ extern void update_cylinder_related_info(struct dive *);
 extern void mark_divelist_changed(int);
 extern int unsaved_changes(void);
 extern void remove_autogen_trips(void);
-extern double init_decompression(struct dive *dive);
+extern bool init_decompression(struct dive *dive);
 
 /* divelist core logic functions */
 extern void process_dives(bool imported, bool prefer_imported);
diff --git a/core/planner.c b/core/planner.c
index ccb71c3..5bc7e82 100644
--- a/core/planner.c
+++ b/core/planner.c
@@ -128,7 +128,7 @@ void interpolate_transition(struct dive *dive, duration_t t0, duration_t t1, dep
 }
 
 /* returns the tissue tolerance at the end of this (partial) dive */
-void tissue_at_end(struct dive *dive, char **cached_datap)
+bool tissue_at_end(struct dive *dive, char **cached_datap)
 {
 	struct divecomputer *dc;
 	struct sample *sample, *psample;
@@ -136,18 +136,19 @@ void tissue_at_end(struct dive *dive, char **cached_datap)
 	depth_t lastdepth = {};
 	duration_t t0 = {}, t1 = {};
 	struct gasmix gas;
+	bool repetitive = false;
 
 	if (!dive)
-		return;
+		return false;
 	if (*cached_datap) {
 		restore_deco_state(*cached_datap);
 	} else {
-		init_decompression(dive);
+		repetitive = init_decompression(dive);
 		cache_deco_state(cached_datap);
 	}
 	dc = &dive->dc;
 	if (!dc->samples)
-		return;
+		return false;
 	psample = sample = dc->sample;
 
 	for (i = 0; i < dc->samples; i++, sample++) {
@@ -190,6 +191,7 @@ void tissue_at_end(struct dive *dive, char **cached_datap)
 		psample = sample;
 		t0 = t1;
 	}
+	return repetitive;
 }
 
 
@@ -594,8 +596,10 @@ static void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool
 		snprintf(temp, sz_temp, translate("gettextFromC", "recreational mode based on Bühlmann ZHL-16B with GFlow = %d and GFhigh = %d"),
 			diveplan->gflow, diveplan->gfhigh);
 	}
-	len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s</b><br>%s</div>",
-			translate("gettextFromC", "Subsurface dive plan"), temp);
+	len += snprintf(buffer + len, sz_buffer - len, "<div><b>%s%s</b><br>%s</div>",
+			translate("gettextFromC", "Subsurface dive plan"),
+			diveplan->repetitive ? translate("gettextFromC", " (repetitive)") : "",
+			temp);
 	len += snprintf(buffer + len, sz_buffer - len, translate("gettextFromC", "<div>Runtime: %dmin</div><br>"),
 			diveplan_duration(diveplan));
 
@@ -1082,7 +1086,7 @@ bool plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool
 	gi = gaschangenr - 1;
 
 	/* Set tissue tolerance and initial vpmb gradient at start of ascent phase */
-	tissue_at_end(&displayed_dive, cached_datap);
+	diveplan->repetitive = tissue_at_end(&displayed_dive, cached_datap);
 	nuclear_regeneration(clock);
 	vpmb_start_gradient();
 
-- 
2.10.1 (Apple Git-78)