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improve detection of invalid format strings. allow to replace format style variables

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This commit is contained in:
Axel Kohlmeyer
2022-09-30 09:57:42 -04:00
parent fce0877cac
commit ec0bc5aa5e
1 changed files with 25 additions and 12 deletions
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17
src/variable.cpp
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@ -389,19 +389,32 @@ void Variable::set(int narg, char **arg)
// 3rd is filled on retrieval
} else if (strcmp(arg[1],"format") == 0) {
constexpr char validfmt[] = "% ?-?[0-9]*\\.?[0-9]*[efgEFG]";
if (narg != 4) error->all(FLERR,"Illegal variable command: expected 4 arguments but found {}", narg);
if (find(arg[0]) >= 0) return;
int ivar = find(arg[0]);
if (ivar >= 0) {
if (style[ivar] != FORMAT)
error->all(FLERR,"Cannot redefine variable as a different style");
if (!utils::strmatch(arg[3], validfmt))
error->all(FLERR,"Incorrect conversion in format string");
delete[] data[ivar][0];
delete[] data[ivar][1];
data[ivar][0] = utils::strdup(arg[2]);
data[ivar][1] = utils::strdup(arg[3]);
replaceflag = 1;
} else {
if (nvar == maxvar) grow();
style[nvar] = FORMAT;
num[nvar] = 3;
which[nvar] = 0;
pad[nvar] = 0;
if (!utils::strmatch(arg[3],"%[0-9 ]*\\.[0-9]+[efgEFG]"))
if (!utils::strmatch(arg[3], validfmt))
error->all(FLERR,"Incorrect conversion in format string");
data[nvar] = new char*[num[nvar]];
copy(2,&arg[2],data[nvar]);
data[nvar][2] = new char[VALUELENGTH];
strcpy(data[nvar][2],"(undefined)");
}
// EQUAL
// replace pre-existing var if also style EQUAL (allows it to be reset)