rosapps/applications/sysutils/man/man.c

   1 /*
   2  * FILE       : man.c
   3  * NATIVE NAME: ReactOS manual browser
   4  * AUTHOR     : Semyon Novikov (tappak)
   5  * PROJECT    : ReactOS Operating System
   6  * DESCRIPTION: manual file browser (Use Linux man file syntax)
   7  * DATE       : 2004-03-29
   8  * LICENSE    : GPL
   9  */
  10
  11  /*  Known issues.
  12   *  1. Scroll screen
  13   *  2. Non ENVIRONMENT manpath varrible
  14   *  3. At the end of man page must be ./" tag!
  15   */
  16
  17
  18 #include <stdio.h>
  19 #include <string.h>
  20 #include <windows.h>
  21 #include <wincon.h>
  22
  23 #define MAXLINE 256
  24 #define BOLD 7|9
  25 #define ITALIC 3|9
  26 #define NORMAL 7|0
  27
  28 /*===[functions]===*/
  29 void SetCl(WORD cl);
  30 int  OpenF(char* name);
  31 int  CloseF(void);
  32 void Usage(void);
  33 int AnalyzeArgv(char *);
  34 int AnalyzeFile();
  35 /*=================*/
  36
  37 /*====[Globals]====*/
  38 FILE* manfile;
  39 char OpenFlag=0;
  40 char manpath[MAXLINE]="c:\\man\\";
  41 /*=================*/
  42
  43 void
  44 SetCl(WORD cl)
  45 {
  46  SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),cl);
  47 }
  48
  49 int
  50 OpenF(char* name)
  51 {
  52     int retval=0;
  53     char *manpath_local=(char*)malloc(sizeof(char)*MAXLINE);
  54
  55     strcpy(manpath_local, manpath); //save mandir value
  56
  57     if((manfile=fopen((strcat(manpath_local,name)),"r"))!=NULL)
  58      {
  59       OpenFlag=1;
  60       AnalyzeFile();
  61      }
  62     else
  63      retval=-1;
  64
  65  strcpy(manpath_local, manpath);
  66  return retval;
  67 }
  68
  69 int
  70 CloseF()
  71 {
  72     int retval=0;
  73
  74     if(fclose(manfile))
  75      OpenFlag=0;
  76     else retval=-1;
  77
  78     return retval;
  79 }
  80
  81 void
  82 Usage()
  83 {
  84     puts("usage: man [command]");
  85     puts("see \"man man\" for details");
  86 }
  87
  88 int
  89 AnalyzeArgv(char *argument)
  90 {
  91     int element=0;
  92     char HelpFlag=0;
  93     char *keys[]={"--help","/h","/?","-h"};
  94     char *sections[]={".1",".2",".3",".4",".5",".6",".7",".8",".9"};
  95     char *filename=(char*)malloc(sizeof(char)*MAXLINE);
  96
  97     strcpy(filename,argument); //save argument value
  98
  99     for(element=0; element < 5;element++)
 100      if(!strcmp(keys[element],argument))
 101      {
 102       Usage();
 103       HelpFlag=1;
 104      }
 105
 106    element = 0;
 107
 108    if(!HelpFlag)
 109
 110    if(OpenF(filename))
 111     while(OpenF(strcat(filename,sections[element])) && (element<9))
 112     {
 113      strcpy(filename,argument);
 114      element++;
 115     }
 116
 117     if(element>8) printf("No manual for %s\n",argument);
 118
 119     return element;
 120 }
 121
 122 void sh_outp(char *cur_string)
 123 {
 124     int symbol;
 125     putchar('\n');
 126     putchar('\n');
 127     for(symbol=3;putchar(cur_string[symbol]); symbol++);
 128 }
 129
 130 void th_outp(char *cur_string, char *THtag)
 131 {
 132     int symbol;
 133     putchar('\n');
 134     putchar('\n');
 135     putchar('\t');
 136     putchar('\t');
 137     SetCl(ITALIC);
 138      for(symbol=3;putchar(THtag[symbol]); symbol++);
 139     putchar('\n');
 140     SetCl(NORMAL);
 141 }
 142
 143 void text_outp(char *cur_string)
 144 {
 145     char TagFlag=0;
 146     int symbol=0;
 147
 148     if(cur_string[0]=='.')
 149         while(cur_string[symbol]!=' ')
 150             symbol++;
 151
 152     if(symbol) TagFlag=1;
 153
 154     for(;cur_string[symbol]!='\n'; symbol++)
 155         putchar(cur_string[symbol]);
 156         putchar(' ');
 157 }
 158
 159 int
 160 AnalyzeFile()
 161 {
 162     char *cur_string=(char*)malloc(sizeof(char)*MAXLINE);
 163     char *THtag=(char*)malloc(sizeof(char)*MAXLINE);
 164
 165
 166
 167
 168     while(fgets(cur_string,MAXLINE,manfile))
 169
 170 /* TAGs processing */
 171      if((cur_string[0]=='.')&&(cur_string[1]=='S')&&
 172        (cur_string[2]=='H')) // .SH tag
 173       {
 174        SetCl(BOLD);
 175        sh_outp(cur_string);
 176        SetCl(NORMAL);
 177       }
 178      else
 179      if((cur_string[0]=='.')&&(cur_string[1]=='I')&&
 180        (cur_string[2]==' ')) // .I tag
 181       {
 182        SetCl(ITALIC);
 183        text_outp(cur_string);
 184        SetCl(NORMAL);
 185       }
 186      else
 187      if((cur_string[0]=='.')&&(cur_string[1]=='/')&&
 188        (cur_string[2]=='\"')); // ./" tag (comment)
 189
 190      else
 191      if((cur_string[0]=='.')&&(cur_string[1]=='T')&&
 192        (cur_string[2]=='H')) // .TH tag
 193       {
 194        strcpy(THtag,cur_string);
 195       }
 196      else
 197      if((cur_string[0]=='.')&&(cur_string[1]=='B')&&
 198        (cur_string[2]==' ')) // .B tag
 199       {
 200        SetCl(BOLD);
 201        text_outp(cur_string);
 202        SetCl(NORMAL);
 203       }
 204       else
 205       if((cur_string[0]=='.')&&(cur_string[1]=='N')&&
 206         (cur_string[2]=='L'))
 207        {
 208         putchar('\n');
 209         putchar(' ');
 210        }
 211
 212      else text_outp(cur_string); // print plane text
 213      th_outp(cur_string, THtag);
 214 /* END of TAGs processing */
 215      return 0;
 216 }
 217
 218
 219 int
 220 main(int argc, char *argv[])
 221 {
 222
 223   switch(argc)
 224     {
 225      case 1:  Usage(); break;
 226      case 2:  AnalyzeArgv(argv[1]);break;
 227      default: Usage();break;
 228     }
 229
 230    if(OpenFlag)CloseF();
 231    SetCl(NORMAL);
 232    return 0;
 233 }
 234