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path: root/src/lib/netlist/plib/pfmtlog.cpp
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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
 * nl_string.c
 *
 */

#include "pfmtlog.h"
#include "palloc.h"

#include <cstring>
#include <cstdlib>
#include <cstdarg>
#include <algorithm>

namespace plib {

plog_dispatch_intf::~plog_dispatch_intf()
{
}

pfmt::pfmt(const pstring fmt)
: m_str(m_str_buf), m_allocated(0), m_arg(0)
{
	std::size_t l = fmt.blen() + 1;
	if (l>sizeof(m_str_buf))
	{
		m_allocated = 2 * l;
		m_str = palloc_array<char>(2 * l);
	}
	memcpy(m_str, fmt.c_str(), l);
}

pfmt::~pfmt()
{
	if (m_allocated > 0)
		pfree_array(m_str);
}

void pfmt::format_element(const char *f, const char *l, const char *fmt_spec,  ...)
{
	va_list ap;
	va_start(ap, fmt_spec);
	char fmt[30] = "%";
	char search[10] = "";
	char buf[2048];
	m_arg++;
	std::size_t sl = static_cast<std::size_t>(sprintf(search, "{%d:", m_arg));
	char *p = strstr(m_str, search);
	if (p == nullptr)
	{
		sl = static_cast<std::size_t>(sprintf(search, "{%d}", m_arg));
		p = strstr(m_str, search);
		if (p == nullptr)
		{
			sl = 2;
			p = strstr(m_str, "{}");
		}
		if (p==nullptr)
		{
			sl=1;
			p = strstr(m_str, "{");
			if (p != nullptr)
			{
				char *p1 = strstr(p, "}");
				if (p1 != nullptr)
				{
					sl = static_cast<std::size_t>(p1 - p + 1);
					strncat(fmt, p+1, static_cast<std::size_t>(p1 - p - 2));
				}
				else
					strcat(fmt, f);
			}
			else
				strcat(fmt, f);
		}
	}
	else
	{
		char *p1 = strstr(p, "}");
		if (p1 != nullptr)
		{
			sl = static_cast<std::size_t>(p1 - p + 1);
			if (m_arg>=10)
				strncat(fmt, p+4, static_cast<std::size_t>(p1 - p - 4));
			else
				strncat(fmt, p+3, static_cast<std::size_t>(p1 - p - 3));
		}
		else
			strcat(fmt, f);
	}
	strcat(fmt, l);
	char *pend = fmt + strlen(fmt) - 1;
	if (strchr("fge", *fmt_spec) != nullptr)
	{
		if (strchr("fge", *pend) == nullptr)
			strcat(fmt, fmt_spec);
	}
	else if (strchr("duxo", *fmt_spec) != nullptr)
	{
		if (strchr("duxo", *pend) == nullptr)
			strcat(fmt, fmt_spec);
	}
	else
		strcat(fmt, fmt_spec);
	std::size_t nl = static_cast<std::size_t>(vsprintf(buf, fmt, ap));
	if (p != nullptr)
	{
		// check room
		std::size_t new_size = static_cast<std::size_t>(p - m_str) + nl + strlen(p) + 1 - sl;
		if (new_size > m_allocated)
		{
			std::size_t old_alloc = std::max(m_allocated, sizeof(m_str_buf));
			if (m_allocated < old_alloc)
				m_allocated = old_alloc;
			while (new_size > m_allocated)
				m_allocated *= 2;
			char *np = palloc_array<char>(m_allocated);
			memcpy(np, m_str, old_alloc);
			p = np + (p - m_str);
			if (m_str != m_str_buf)
				pfree_array(m_str);
			m_str = np;
		}
		// Make room
		memmove(p+nl, p+sl, strlen(p) + 1 - sl);
		memcpy(p, buf, nl);
	}
	va_end(ap);
}

}