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core: convert parse_mkvi_value() and parse_mkvi_key() to C++

Browse source 
This was a particularly funny one: It trampled on and then
restored the buffer.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2024-03-02 09:33:29 +01:00 • committed by Michael Keller
parent cca4c8cae5
commit 6b054318e0
1 changed files with 21 additions and 40 deletions
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61
core/import-csv.cpp
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@ -445,42 +445,33 @@ int try_to_open_csv(std::string &mem, enum csv_format type, struct divelog *log)
return 1;
}
static char *parse_mkvi_value(char *haystack, const char *needle)
static std::string parse_mkvi_value(const char *haystack, const char *needle)
{
char *lineptr, *valueptr, *endptr, *ret = NULL;
const char *lineptr, *valueptr, *endptr;
if ((lineptr = strstr(haystack, needle)) != NULL) {
if ((valueptr = strstr(lineptr, ": ")) != NULL) {
valueptr += 2;
}
if ((endptr = strstr(lineptr, "\n")) != NULL) {
char terminator = '\n';
if (*(endptr - 1) == '\r') {
if (*(endptr - 1) == '\r')
--endptr;
terminator = '\r';
}
*endptr = 0;
ret = copy_string(valueptr);
*endptr = terminator;
return std::string(valueptr, endptr - valueptr);
}
}
return ret;
return std::string();
}
static char *next_mkvi_key(char *haystack)
static std::string next_mkvi_key(const char *haystack)
{
char *valueptr, *endptr, *ret = NULL;
const char *valueptr, *endptr;
if ((valueptr = strstr(haystack, "\n")) != NULL) {
valueptr += 1;
if ((endptr = strstr(valueptr, ": ")) != NULL) {
*endptr = 0;
ret = strdup(valueptr);
*endptr = ':';
}
if ((endptr = strstr(valueptr, ": ")) != NULL)
return std::string(valueptr, endptr - valueptr);
}
return ret;
return std::string();
}
int parse_txt_file(const char *filename, const char *csv, struct divelog *log)
@ -498,7 +489,7 @@ int parse_txt_file(const char *filename, const char *csv, struct divelog *log)
int hh = 0, mm = 0, ss = 0;
int prev_depth = 0, cur_sampletime = 0, prev_setpoint = -1, prev_ndl = -1;
bool has_depth = false, has_setpoint = false, has_ndl = false;
char *lineptr, *key, *value;
char *lineptr;
int prev_time = 0;
cylinder_t cyl = empty_cylinder;
@ -506,12 +497,9 @@ int parse_txt_file(const char *filename, const char *csv, struct divelog *log)
struct divecomputer *dc;
struct tm cur_tm;
value = parse_mkvi_value(memtxt.data(), "Dive started at");
if (sscanf(value, "%d-%d-%d %d:%d:%d", &y, &m, &d, &hh, &mm, &ss) != 6) {
free(value);
std::string value = parse_mkvi_value(memtxt.data(), "Dive started at");
if (sscanf(value.c_str(), "%d-%d-%d %d:%d:%d", &y, &m, &d, &hh, &mm, &ss) != 6)
return -1;
}
free(value);
cur_tm.tm_year = y;
cur_tm.tm_mon = m - 1;
cur_tm.tm_mday = d;
@ -523,8 +511,7 @@ int parse_txt_file(const char *filename, const char *csv, struct divelog *log)
dive->when = utc_mktime(&cur_tm);;
dive->dc.model = strdup("Poseidon MkVI Discovery");
value = parse_mkvi_value(memtxt.data(), "Rig Serial number");
dive->dc.deviceid = atoi(value);
free(value);
dive->dc.deviceid = atoi(value.c_str());
dive->dc.divemode = CCR;
dive->dc.no_o2sensors = 2;
@ -543,28 +530,22 @@ int parse_txt_file(const char *filename, const char *csv, struct divelog *log)
cyl.type.workingpressure.mbar = 200000;
cyl.type.description = "3l Mk6";
value = parse_mkvi_value(memtxt.data(), "Helium percentage");
he = atoi(value);
free(value);
he = atoi(value.c_str());
value = parse_mkvi_value(memtxt.data(), "Nitrogen percentage");
cyl.gasmix.o2.permille = (100 - atoi(value) - he) * 10;
free(value);
cyl.gasmix.o2.permille = (100 - atoi(value.c_str()) - he) * 10;
cyl.gasmix.he.permille = he * 10;
add_cloned_cylinder(&dive->cylinders, cyl);
lineptr = strstr(memtxt.data(), "Dive started at");
while (!empty_string(lineptr) && (lineptr = strchr(lineptr, '\n'))) {
++lineptr; // Skip over '\n'
key = next_mkvi_key(lineptr);
if (!key)
std::string key = next_mkvi_key(lineptr);
if (key.empty())
break;
value = parse_mkvi_value(lineptr, key);
if (!value) {
free(key);
std::string value = parse_mkvi_value(lineptr, key.c_str());
if (value.empty())
break;
}
add_extra_data(&dive->dc, key, value);
free(key);
free(value);
add_extra_data(&dive->dc, key.c_str(), value.c_str());
}
dc = &dive->dc;