mirror of
https://github.com/libretro/snes9x.git
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283 lines
9.1 KiB
C++
283 lines
9.1 KiB
C++
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#ifndef _CONFIG_H_
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#define _CONFIG_H_
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#include <set>
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#include <map>
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#include <vector>
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#include <string>
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#ifdef UNZIP_SUPPORT
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# ifdef SYSTEM_ZIP
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# include <minizip/unzip.h>
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# else
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# include "unzip/unzip.h"
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# endif
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#endif
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#include "snes9x.h"
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#ifndef MAX
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# define MAX(a,b) ((a) > (b)? (a) : (b))
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# define MIN(a,b) ((a) < (b)? (a) : (b))
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#endif
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class ConfigFile {
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public:
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ConfigFile(void);
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void Clear(void);
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// return false on failure
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bool LoadFile(const char *filename);
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void LoadFile(Stream *r, const char *name=NULL);
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// return false if key does not exist or is empty
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bool Exists(const char *key);
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// return the value / default
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std::string GetString(const char *key, std::string def);
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char *GetString(const char *key, char *out, uint32 outlen); // return NULL if it doesn't exist, out not affected
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const char *GetString(const char *key, const char *def=NULL); // NOTE: returned pointer becomes invalid when key is deleted/modified, or the ConfigFile is Clear()ed or deleted.
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char *GetStringDup(const char *key, const char *def=NULL); // Much like "strdup(GetString(key, def))"
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int32 GetInt(const char *key, int32 def=-1, bool *bad=NULL);
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uint32 GetUInt(const char *key, uint32 def=0, int base=0, bool *bad=NULL); // base = 0, 8, 10, or 16
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bool GetBool(const char *key, bool def=false, bool *bad=NULL);
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const char* GetComment(const char *key); // NOTE: returned pointer becomes invalid when key is deleted/modified, or the ConfigFile is Clear()ed or deleted.
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// return true if the key existed prior to setting
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bool SetString(const char *key, std::string val, const char *comment="");
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bool SetInt(const char *key, int32 val, const char *comment="");
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bool SetUInt(const char *key, uint32 val, int base=10, const char *comment=""); // base = 8, 10, or 16
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bool SetBool(const char *key, bool val, const char *true_val="TRUE", const char *false_val="FALSE", const char *comment="");
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bool DeleteKey(const char *key);
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// Operation on entire sections
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bool DeleteSection(const char *section);
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typedef std::vector<std::pair<std::string,std::string> > secvec_t;
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secvec_t GetSection(const char *section);
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int GetSectionSize(const std::string section);
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// Clears all key-value pairs that didn't receive a Set command, or a Get command with autoAdd on
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void ClearUnused(void);
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// Clears all stored line numbers
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void ClearLines(void);
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bool SaveTo(const char *filename);
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static void SetDefaultAutoAdd(bool autoAdd);
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static void SetNiceAlignment(bool align);
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static void SetShowComments(bool show);
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static void SetAlphaSort(bool sort);
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static void SetTimeSort(bool sort);
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private:
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std::string Get(const char *key);
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bool Has(const char *key);
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class ConfigEntry {
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protected:
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int line;
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std::string section;
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std::string key;
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std::string val;
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std::string comment;
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mutable bool used;
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struct section_then_key_less {
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bool operator()(const ConfigEntry &a, const ConfigEntry &b);
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};
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struct key_less {
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bool operator()(const ConfigEntry &a, const ConfigEntry &b) const{
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if(a.section!=b.section) return a.section<b.section;
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return a.key<b.key;
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}
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};
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struct line_less {
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bool operator()(const ConfigEntry &a, const ConfigEntry &b){
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if(a.line==b.line) return (b.val.empty() && !a.val.empty()) || a.key<b.key;
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if(b.line<0) return true;
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if(a.line<0) return false;
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return a.line<b.line;
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}
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};
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static void trim(std::string &s){
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int i;
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i=s.find_first_not_of(" \f\n\r\t\v");
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if(i==-1){
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s.clear();
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return;
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}
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if(i>0) s.erase(0, i); // erase leading whitespace
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i=s.find_last_not_of(" \f\n\r\t\v");
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if(i!=-1) s.erase(i+1); // erase trailing whitespace
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return;
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}
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// trims comments and leading/trailing whitespace from s, and returns any trimmed comments
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// make sure not to call this more than once on the same string
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static std::string trimCommented(std::string &s){
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std::string cmt;
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int i;
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i=s.find_first_not_of(" \f\n\r\t\v");
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if(i==-1){
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s.clear();
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return cmt;
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}
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if(i>0) s.erase(0, i); // erase leading whitespace
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int off=0;
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for(;;){
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i=s.find('#',off); // find trailing comment
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if(i>=0)
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{
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if((int)s.length()>i+1 && s.at(i+1) == '#') {
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s.erase(i,1); // ignore ## and change to #
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off = i+1;
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continue;
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} else {
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int j=s.find_first_not_of(" \f\n\r\t\v",i+1);
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if(j!=-1) cmt = s.substr(j); // store
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s.erase(i); // erase trailing comment
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}
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}
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break;
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}
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i=s.find_last_not_of(" \f\n\r\t\v");
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if(i!=-1) s.erase(i+1); // erase trailing whitespace
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return cmt;
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}
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public:
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ConfigEntry(int l, const std::string &s, const std::string &k, const std::string &v) :
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line(l), section(s), key(k), val(v) {
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trim(section);
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trim(key);
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used=false;
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}
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void parse_key(const std::string &k){
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int i=k.find("::");
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if(i==-1){
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section="Uncategorized"; key=k;
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} else {
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section=k.substr(0,i); key=k.substr(i+2);
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}
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trim(section);
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trim(key);
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used=false;
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}
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ConfigEntry(const std::string k){
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parse_key(k);
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}
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ConfigEntry(const std::string k, const std::string &v) : line(-1), val(v) {
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parse_key(k);
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}
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friend class ConfigFile;
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friend struct key_less;
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friend struct line_less;
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};
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class SectionSizes {
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protected:
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std::map<std::string,uint32> sections;
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public:
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uint32 GetSectionSize(const std::string section) {
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uint32 count=0;
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uint32 seclen;
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std::map<std::string,uint32>::iterator it;
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for(it=sections.begin(); it!=sections.end(); it++) {
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seclen = MIN(section.size(),it->first.size());
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if(it->first==section || !section.compare(0,seclen,it->first,0,seclen)) count+=it->second;
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}
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return count;
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}
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void IncreaseSectionSize(const std::string section) {
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std::map<std::string,uint32>::iterator it=sections.find(section);
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if(it!=sections.end())
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it->second++;
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else
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sections.insert(std::pair<std::string,uint32>(section,1));
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}
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void DecreaseSectionSize(const std::string section) {
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std::map<std::string,uint32>::iterator it=sections.find(section);
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if(it!=sections.end())
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it->second--;
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}
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void ClearSections() {
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sections.clear();
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}
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void DeleteSection(const std::string section) {
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sections.erase(section);
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}
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};
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std::set<ConfigEntry, ConfigEntry::key_less> data;
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SectionSizes sectionSizes;
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int linectr;
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static bool defaultAutoAdd;
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static bool niceAlignment;
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static bool showComments;
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static bool alphaSort;
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static bool timeSort;
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};
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/* Config file format:
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*
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* Comments are any lines whose first non-whitespace character is ';' or '#'.
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* Note that comments can also follow a value, on the same line.
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* To intentionally have a '#' character in the value, use ##
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*
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* All parameters fall into sections. To name a section, the first
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* non-whitespace character on the line will be '[', and the last will be ']'.
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*
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* Parameters are simple key=value pairs. Whitespace around the '=', and at the
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* beginning or end of the line is ignored. Key names may not contain '=' nor
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* begin with '[', however values can. If the last character of the value is
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* '\', the next line (sans leading/trailing whitespace) is considered part of
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* the value as well. Programmatically, the key "K" in section "S" is referred
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* to as "S::K", much like C++ namespaces. For example:
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* [Section1]
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* # this is a comment
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* foo = bar \
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* baz\
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* quux \
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* ## this is not a comment! # this IS a comment
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* means the value of "Section1::foo" is "bar bazquux # this is not a comment!"
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*
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* Parameters may be of several types:
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* String - Bare characters. If the first and last characters are both '"',
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* they are removed (so just double them if you really want quotes
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* there)
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* Int - A decimal number from -2147483648 to 2147483647
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* UInt - A number in decimal, hex, or octal from 0 to 4294967295 (or
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* 0xffffffff, or 037777777777)
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* Bool - true/false, 0/1, on/off, yes/no
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*
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* Of course, the actual accepted values for a parameter may be further
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* restricted ;)
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*/
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/* You must write this for your port */
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void S9xParsePortConfig(ConfigFile &, int pass);
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/* This may or may not be useful to you */
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const char *S9xParseDisplayConfig(ConfigFile &, int pass);
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#endif
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