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(re-)add example uses of {fmt}

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This commit is contained in:
Axel Kohlmeyer
2020-05-26 15:16:35 -04:00
parent 56cb761b04
commit b5b71bbb92
11 changed files with 144 additions and 204 deletions
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21
src/utils.cpp
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@ -16,6 +16,7 @@
#include <cstdlib>
#include "lammps.h"
#include "error.h"
#include "fmt/format.h"
#if defined(__linux__)
#include <unistd.h> // for readlink
@ -84,6 +85,19 @@ bool utils::strmatch(std::string text, std::string pattern)
return (pos >= 0);
}
/* This simplifies the repetitive task of outputting some
* message to both the screen and/or the log file. In combination
* with using fmt::format(), which returns the formatted text
* in a std::string() instance, this can be used to reduce
* operations previously requiring several lines of code to
* a single statement. */
void utils::logmesg(LAMMPS *lmp, const std::string &mesg)
{
if (lmp->screen) fputs(mesg.c_str(), lmp->screen);
if (lmp->logfile) fputs(mesg.c_str(), lmp->logfile);
}
/** \brief try to detect pathname from FILE pointer. Currently only supported on Linux, otherwise will report "(unknown)".
*
* \param buf storage buffer for pathname. output will be truncated if not large enough
@ -167,14 +181,15 @@ void utils::sfread(const char *srcname, int srcline, void *s, size_t size,
/* ------------------------------------------------------------------ */
std::string utils::check_packages_for_style(std::string style,
std::string name, LAMMPS *lmp)
std::string utils::check_packages_for_style(const std::string &style,
const std::string &name,
LAMMPS *lmp)
{
std::string errmsg = "Unrecognized " + style + " style '" + name + "'";
const char *pkg = lmp->match_style(style.c_str(),name.c_str());
if (pkg) {
errmsg += " is part of the " + std::string(pkg) + " package";
errmsg += fmt::format(" is part of the {} package",pkg);
if (lmp->is_installed_pkg(pkg))
errmsg += ", but seems to be missing because of a dependency";
else