1 | /**************************************** |
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2 | * Computer Algebra System SINGULAR * |
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3 | ****************************************/ |
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4 | /* $Id: febase.cc,v 1.84 1999-11-15 12:53:28 obachman Exp $ */ |
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5 | /* |
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6 | * ABSTRACT: i/o system |
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7 | */ |
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8 | |
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9 | #include "mod2.h" |
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10 | |
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11 | #include <stdlib.h> |
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12 | #include <stdio.h> |
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13 | #include <limits.h> |
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14 | #include <stdarg.h> |
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15 | #ifndef __MWERKS__ |
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16 | #include <unistd.h> |
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17 | #endif |
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18 | #ifdef NeXT |
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19 | #include <sys/file.h> |
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20 | #endif |
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21 | |
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22 | #ifdef HAVE_PWD_H |
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23 | #include "pwd.h" |
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24 | #endif |
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25 | |
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26 | #include "tok.h" |
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27 | #include "febase.h" |
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28 | #include "mmemory.h" |
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29 | #include "subexpr.h" |
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30 | #include "ipshell.h" |
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31 | |
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32 | |
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33 | #define fePutChar(c) fputc((uchar)(c),stdout) |
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34 | /*0 implementation */ |
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35 | |
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36 | char fe_promptstr[] |
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37 | #ifdef macintosh |
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38 | =" \n"; |
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39 | #else |
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40 | =" "; |
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41 | #endif |
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42 | |
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43 | #define INITIAL_PRINT_BUFFER 24*1024 |
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44 | static int feBufferLength=INITIAL_PRINT_BUFFER; |
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45 | static char * feBuffer=(char *)Alloc(INITIAL_PRINT_BUFFER); |
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46 | |
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47 | int si_echo = 0; |
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48 | int printlevel = 0; |
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49 | #ifndef macintosh |
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50 | int pagelength = 24; |
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51 | #else |
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52 | int pagelength = -1; |
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53 | #endif |
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54 | int colmax = 80; |
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55 | char prompt_char = '>'; /*1 either '>' or '.'*/ |
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56 | extern "C" { |
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57 | BITSET verbose = 1 |
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58 | | Sy_bit(V_REDEFINE) |
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59 | | Sy_bit(V_LOAD_LIB) |
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60 | | Sy_bit(V_SHOW_USE) |
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61 | | Sy_bit(V_PROMPT) |
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62 | /* | Sy_bit(V_DEBUG_MEM) */ |
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63 | ;} |
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64 | BOOLEAN errorreported = FALSE; |
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65 | char * feErrors=NULL; |
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66 | int feErrorsLen=0; |
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67 | BOOLEAN feWarn = TRUE; |
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68 | BOOLEAN feOut = TRUE; |
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69 | |
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70 | #ifdef macintosh |
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71 | static int lines = 0; |
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72 | static int cols = 0; |
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73 | #endif |
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74 | |
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75 | const char feNotImplemented[]="not implemented"; |
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76 | |
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77 | BOOLEAN feProt = FALSE; |
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78 | FILE* feProtFile; |
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79 | BOOLEAN tclmode=FALSE; |
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80 | /* TCL-Protocoll (Singular -x): <char type>:<int length>:<string> \n |
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81 | * E:l:s error |
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82 | * W:l:s warning |
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83 | * N:l:s stdout |
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84 | * Q:0: quit |
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85 | * P:l: prompt > (ring defined) |
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86 | * U:l: prompt > (no ring defined) |
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87 | * P:l: prompt . |
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88 | * R:l:<ring-name> ring change |
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89 | * L:l:<lib name> library loaded |
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90 | * O:l:<list of options(space seperated)> option change |
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91 | * M:l:<mem-usage> output from "option(mem)" |
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92 | */ |
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93 | |
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94 | #include "febase.inc" |
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95 | |
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96 | /***************************************************************** |
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97 | * |
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98 | * File handling |
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99 | * |
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100 | *****************************************************************/ |
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101 | |
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102 | FILE * feFopen(char *path, char *mode, char *where,int useWerror, |
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103 | int path_only) |
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104 | { |
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105 | char longpath[MAXPATHLEN]; |
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106 | if (path[0]=='~') |
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107 | { |
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108 | if (path[1] == DIR_SEP) |
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109 | { |
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110 | char* home = getenv("HOME"); |
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111 | if (home != NULL) |
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112 | { |
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113 | strcpy(longpath, home); |
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114 | strcat(longpath, &(path[1])); |
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115 | path = longpath; |
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116 | } |
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117 | } |
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118 | #if defined(HAVE_PWD_H) && defined(HAVE_GETPWNAM) |
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119 | else |
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120 | { |
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121 | char* dir_sep; |
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122 | struct passwd *pw_entry; |
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123 | strcpy (longpath, path); |
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124 | dir_sep = strchr(longpath, DIR_SEP); |
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125 | *dir_sep = '\0'; |
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126 | pw_entry = getpwnam(&longpath[1]); |
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127 | if (pw_entry != NULL) |
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128 | { |
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129 | strcpy(longpath, pw_entry->pw_dir); |
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130 | dir_sep = strchr(path, DIR_SEP); |
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131 | strcat(longpath, dir_sep); |
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132 | path = longpath; |
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133 | } |
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134 | } |
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135 | #endif |
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136 | } |
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137 | FILE * f=NULL; |
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138 | if (! path_only) |
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139 | f = myfopen(path,mode); |
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140 | if (where!=NULL) strcpy(where,path); |
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141 | if ((*mode=='r') && |
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142 | (path[0]!=DIR_SEP) && |
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143 | ! (path[0] == '.' && path[1] == DIR_SEP) && |
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144 | (f==NULL)) |
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145 | { |
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146 | char found = 0; |
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147 | char* spath = feResource('s'); |
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148 | char *s; |
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149 | |
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150 | if (where==NULL) s=(char *)AllocL(250); |
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151 | else s=where; |
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152 | |
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153 | if (spath!=NULL) |
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154 | { |
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155 | char *p,*q; |
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156 | p = spath; |
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157 | while( (q=strchr(p, fePathSep)) != NULL) |
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158 | { |
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159 | *q = '\0'; |
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160 | strcpy(s,p); |
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161 | *q = fePathSep; |
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162 | strcat(s, DIR_SEPP); |
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163 | strcat(s, path); |
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164 | #ifndef macintosh |
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165 | if(!access(s, R_OK)) { found++; break; } |
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166 | #else |
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167 | f=fopen(s,mode); /* do not need myfopen: we test only the access */ |
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168 | if (f!=NULL) { found++; fclose(f); break; } |
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169 | #endif |
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170 | p = q+1; |
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171 | } |
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172 | if(!found) |
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173 | { |
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174 | strcpy(s,p); |
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175 | strcat(s, DIR_SEPP); |
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176 | strcat(s, path); |
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177 | } |
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178 | f=myfopen(s,mode); |
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179 | if (f!=NULL) |
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180 | { |
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181 | if (where==NULL) FreeL((ADDRESS)s); |
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182 | return f; |
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183 | } |
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184 | } |
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185 | else |
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186 | { |
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187 | if (where!=NULL) strcpy(s/*where*/,path); |
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188 | f=myfopen(path,mode); |
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189 | } |
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190 | if (where==NULL) FreeL((ADDRESS)s); |
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191 | } |
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192 | if ((f==NULL)&&(useWerror)) |
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193 | Werror("cannot open `%s`",path); |
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194 | return f; |
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195 | } |
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196 | |
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197 | static char * feBufferStart; |
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198 | /* only used in StringSet(S)/StringAppend(S)*/ |
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199 | char * StringAppend(char *fmt, ...) |
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200 | { |
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201 | va_list ap; |
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202 | char *s = feBufferStart; /*feBuffer + strlen(feBuffer);*/ |
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203 | int more, vs; |
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204 | va_start(ap, fmt); |
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205 | if ((more=feBufferStart-feBuffer+strlen(fmt)+100)>feBufferLength) |
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206 | { |
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207 | more = ((more + (4*1024-1))/(4*1024))*(4*1024); |
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208 | int l=s-feBuffer; |
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209 | feBuffer=(char *)ReAlloc((ADDRESS)feBuffer,feBufferLength, |
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210 | more); |
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211 | feBufferLength=more; |
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212 | s=feBuffer+l; |
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213 | #ifndef BSD_SPRINTF |
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214 | feBufferStart=s; |
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215 | #endif |
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216 | } |
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217 | #ifdef BSD_SPRINTF |
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218 | vsprintf(s, fmt, ap); |
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219 | while (*s!='\0') s++; |
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220 | feBufferStart =s; |
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221 | #else |
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222 | #ifdef HAVE_VSNPRINTF |
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223 | vs = vsnprintf(s, feBufferLength - (feBufferStart - feBuffer), fmt, ap); |
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224 | if (vs == -1) |
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225 | { |
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226 | assume(0); |
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227 | feBufferStart = feBuffer + feBufferLength -1; |
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228 | } |
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229 | else |
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230 | { |
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231 | feBufferStart += vs; |
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232 | } |
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233 | #else |
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234 | feBufferStart += vsprintf(s, fmt, ap); |
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235 | #endif |
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236 | #endif |
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237 | mmTest(feBuffer, feBufferLength); |
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238 | va_end(ap); |
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239 | return feBuffer; |
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240 | } |
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241 | |
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242 | char * StringAppendS(char *st) |
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243 | { |
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244 | /* feBufferStart is feBuffer + strlen(feBuffer);*/ |
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245 | int more,l; |
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246 | int ll=feBufferStart-feBuffer; |
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247 | if ((more=ll+2+(l=strlen(st)))>feBufferLength) |
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248 | { |
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249 | more = ((more + (4*1024-1))/(4*1024))*(4*1024); |
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250 | feBuffer=(char *)ReAlloc((ADDRESS)feBuffer,feBufferLength, |
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251 | more); |
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252 | feBufferLength=more; |
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253 | feBufferStart=feBuffer+ll; |
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254 | } |
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255 | strcat(feBufferStart, st); |
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256 | feBufferStart +=l; |
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257 | return feBuffer; |
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258 | } |
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259 | |
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260 | char * StringSetS(char *st) |
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261 | { |
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262 | int more,l; |
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263 | if ((l=strlen(st))>feBufferLength) |
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264 | { |
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265 | more = ((l + (4*1024-1))/(4*1024))*(4*1024); |
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266 | feBuffer=(char *)ReAlloc((ADDRESS)feBuffer,feBufferLength, |
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267 | more); |
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268 | feBufferLength=more; |
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269 | } |
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270 | strcpy(feBuffer,st); |
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271 | feBufferStart=feBuffer+l; |
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272 | return feBuffer; |
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273 | } |
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274 | |
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275 | #ifndef __MWERKS__ |
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276 | #ifdef HAVE_TCL |
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277 | extern "C" { |
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278 | void PrintTCLS(const char c, const char *s) |
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279 | { |
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280 | int l=strlen(s); |
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281 | if (l>0) PrintTCL(c,l,s); |
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282 | } |
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283 | } |
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284 | #endif |
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285 | #endif |
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286 | |
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287 | extern "C" { |
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288 | void WerrorS(const char *s) |
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289 | { |
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290 | #ifdef HAVE_MPSR |
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291 | if (fe_fgets_stdin==fe_fgets_dummy) |
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292 | { |
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293 | if (feErrors==NULL) |
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294 | { |
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295 | feErrors=(char *)Alloc(256); |
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296 | feErrorsLen=256; |
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297 | *feErrors = '\0'; |
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298 | } |
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299 | else |
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300 | { |
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301 | if (((int)(strlen((char *)s)+ 20 +strlen(feErrors)))>=feErrorsLen) |
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302 | { |
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303 | feErrors=(char *)ReAlloc(feErrors,feErrorsLen,feErrorsLen+256); |
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304 | feErrorsLen+=256; |
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305 | } |
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306 | } |
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307 | strcat(feErrors, "Singular error: "); |
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308 | strcat(feErrors, (char *)s); |
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309 | } |
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310 | else |
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311 | #endif |
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312 | { |
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313 | #ifdef HAVE_TCL |
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314 | if (tclmode) |
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315 | { |
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316 | PrintTCLS('E',(char *)s); |
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317 | PrintTCLS('E',"\n"); |
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318 | } |
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319 | else |
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320 | #endif |
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321 | { |
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322 | fwrite(" ? ",1,5,stderr); |
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323 | fwrite((char *)s,1,strlen((char *)s),stderr); |
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324 | fwrite("\n",1,1,stderr); |
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325 | fflush(stderr); |
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326 | if (feProt&PROT_O) |
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327 | { |
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328 | fwrite(" ? ",1,5,feProtFile); |
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329 | fwrite((char *)s,1,strlen((char *)s),feProtFile); |
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330 | fwrite("\n",1,1,feProtFile); |
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331 | } |
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332 | } |
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333 | } |
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334 | errorreported = TRUE; |
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335 | } |
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336 | |
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337 | void Werror(char *fmt, ...) |
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338 | { |
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339 | va_list ap; |
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340 | va_start(ap, fmt); |
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341 | char *s=(char *)Alloc(256); |
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342 | vsprintf(s, fmt, ap); |
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343 | WerrorS(s); |
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344 | Free(s,256); |
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345 | va_end(ap); |
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346 | } |
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347 | } |
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348 | |
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349 | void WarnS(const char *s) |
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350 | { |
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351 | #define warn_str "// ** " |
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352 | #ifdef HAVE_TCL |
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353 | if (tclmode) |
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354 | { |
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355 | PrintTCLS('W',warn_str); |
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356 | PrintTCLS('W',s); |
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357 | PrintTCLS('W',"\n"); |
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358 | } |
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359 | else |
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360 | #endif |
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361 | if (feWarn) /* ignore warnings if option --no-warn was given */ |
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362 | { |
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363 | fwrite(warn_str,1,6,stdout); |
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364 | fwrite(s,1,strlen(s),stdout); |
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365 | fwrite("\n",1,1,stdout); |
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366 | fflush(stdout); |
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367 | if (feProt&PROT_O) |
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368 | { |
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369 | fwrite(warn_str,1,6,feProtFile); |
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370 | fwrite(s,1,strlen(s),feProtFile); |
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371 | fwrite("\n",1,1,feProtFile); |
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372 | } |
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373 | } |
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374 | } |
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375 | |
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376 | void Warn(const char *fmt, ...) |
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377 | { |
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378 | va_list ap; |
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379 | va_start(ap, fmt); |
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380 | char *s=(char *)Alloc(256); |
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381 | vsprintf(s, fmt, ap); |
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382 | WarnS(s); |
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383 | Free(s,256); |
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384 | va_end(ap); |
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385 | } |
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386 | |
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387 | void fePrintReportBug(char* msg, char* file, int line) |
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388 | { |
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389 | WarnS("YOU HAVE FOUND A BUG IN SINGULAR."); |
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390 | WarnS("Please, email the following output to singular@mathematik.uni-kl.de"); |
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391 | Warn("Bug occured at %s:%d", file, line); |
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392 | Warn("Message: %s", msg); |
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393 | Warn("Version: " S_UNAME S_VERSION1 " (%lu) " __DATE__ __TIME__, |
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394 | feVersionId); |
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395 | } |
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396 | |
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397 | extern "C" { |
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398 | void assume_violation(char* file, int line) |
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399 | { |
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400 | fprintf(stderr, "Internal assume violation: file %s line %d\n", file, line); |
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401 | } |
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402 | } |
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403 | |
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404 | #ifdef macintosh |
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405 | static int lines = 0; |
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406 | static int cols = 0; |
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407 | |
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408 | void mwrite(uchar c) |
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409 | { |
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410 | if (c == '\n') |
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411 | { |
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412 | cols = 0; |
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413 | if (lines == pagelength) |
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414 | { |
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415 | lines = 0; |
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416 | fputs("pause>\n",stderr); |
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417 | uchar c = fgetc(stdin); |
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418 | } |
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419 | else |
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420 | { |
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421 | lines++; |
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422 | fePutChar(c); |
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423 | } |
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424 | } |
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425 | else |
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426 | { |
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427 | fePutChar(c); |
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428 | cols++; |
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429 | if (cols == colmax) |
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430 | { |
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431 | // cols = 0; //will be done by mwrite('\n'); |
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432 | mwrite('\n'); |
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433 | } |
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434 | } |
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435 | } |
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436 | #endif |
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437 | |
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438 | // some routines which redirect the output of print to a string |
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439 | static char* sprint = NULL; |
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440 | void SPrintStart() |
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441 | { |
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442 | sprint = mstrdup(""); |
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443 | } |
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444 | |
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445 | static void SPrintS(char* s) |
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446 | { |
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447 | mmTestL(sprint); |
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448 | if (s == NULL) return; |
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449 | int ls = strlen(s); |
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450 | if (ls == 0) return; |
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451 | |
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452 | char* ns; |
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453 | int l = strlen(sprint); |
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454 | ns = (char*) AllocL((l + ls + 1)*sizeof(char)); |
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455 | if (l > 0) strcpy(ns, sprint); |
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456 | |
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457 | strcpy(&(ns[l]), s); |
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458 | FreeL(sprint); |
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459 | sprint = ns; |
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460 | mmTestL(sprint); |
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461 | } |
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462 | |
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463 | char* SPrintEnd() |
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464 | { |
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465 | char* ns = sprint; |
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466 | sprint = NULL; |
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467 | mmTestL(ns); |
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468 | return ns; |
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469 | } |
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470 | |
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471 | // Print routines |
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472 | extern "C" { |
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473 | void PrintS(char *s) |
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474 | { |
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475 | if (sprint != NULL) |
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476 | { |
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477 | SPrintS(s); |
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478 | return; |
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479 | } |
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480 | |
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481 | if (feOut) /* do not print when option --no-out was given */ |
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482 | { |
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483 | |
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484 | #ifdef macintosh |
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485 | char c; |
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486 | while ('\0' != (c = *s++)) |
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487 | { |
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488 | mwrite(c); |
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489 | } |
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490 | #else |
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491 | #ifdef HAVE_TCL |
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492 | if (tclmode) |
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493 | { |
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494 | PrintTCLS('N',s); |
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495 | } |
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496 | else |
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497 | #endif |
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498 | { |
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499 | fwrite(s,1,strlen(s),stdout); |
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500 | fflush(stdout); |
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501 | if (feProt&PROT_O) |
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502 | { |
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503 | fwrite(s,1,strlen(s),feProtFile); |
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504 | } |
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505 | } |
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506 | #endif |
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507 | } |
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508 | } |
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509 | |
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510 | void PrintLn() |
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511 | { |
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512 | PrintS("\n"); |
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513 | } |
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514 | |
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515 | void Print(char *fmt, ...) |
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516 | { |
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517 | if (sprint != NULL) |
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518 | { |
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519 | int ls = strlen(fmt); |
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520 | va_list ap; |
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521 | va_start(ap, fmt); |
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522 | mmTestL(sprint); |
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523 | if (fmt != NULL && ls > 0) |
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524 | { |
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525 | char* ns; |
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526 | int l = strlen(sprint); |
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527 | ns = (char*) AllocL(sizeof(char)*(ls + l + 256)); |
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528 | if (l > 0) strcpy(ns, sprint); |
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529 | |
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530 | #ifdef HAVE_VSNPRINTF |
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531 | l = vsnprintf(&(ns[l]), ls+255, fmt, ap); |
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532 | assume(l != -1); |
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533 | #else |
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534 | vsprintf(&(ns[l]), fmt, ap); |
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535 | #endif |
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536 | mmTestL(ns); |
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537 | FreeL(sprint); |
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538 | sprint = ns; |
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539 | } |
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540 | va_end(ap); |
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541 | return; |
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542 | } |
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543 | if (feOut) |
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544 | { |
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545 | va_list ap; |
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546 | va_start(ap, fmt); |
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547 | #ifdef HAVE_TCL |
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548 | if(tclmode) |
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549 | #endif |
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550 | #if (defined(HAVE_TCL) || defined(macintosh)) |
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551 | { |
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552 | char *s=(char *)Alloc(strlen(fmt)+256); |
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553 | vsprintf(s,fmt, ap); |
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554 | #ifdef HAVE_TCL |
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555 | PrintTCLS('N',s); |
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556 | #endif |
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557 | #ifdef macintosh |
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558 | char c; |
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559 | while ('\0' != (c = *s++)) |
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560 | { |
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561 | mwrite(c); |
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562 | } |
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563 | if (feProt&PROT_O) |
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564 | { |
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565 | vfprintf(feProtFile,fmt,ap); |
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566 | } |
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567 | #endif |
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568 | } |
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569 | #endif |
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570 | #if !defined(macintosh) || defined(HAVE_TCL) |
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571 | #ifdef HAVE_TCL |
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572 | else |
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573 | #endif |
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574 | { |
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575 | vfprintf(stdout, fmt, ap); |
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576 | fflush(stdout); |
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577 | if (feProt&PROT_O) |
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578 | { |
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579 | vfprintf(feProtFile,fmt,ap); |
---|
580 | } |
---|
581 | } |
---|
582 | #endif |
---|
583 | va_end(ap); |
---|
584 | } |
---|
585 | } |
---|
586 | |
---|
587 | /* end extern "C" */ |
---|
588 | } |
---|
589 | |
---|
590 | void monitor(char* s, int mode) |
---|
591 | { |
---|
592 | if (feProt) |
---|
593 | { |
---|
594 | fclose(feProtFile); |
---|
595 | } |
---|
596 | if ((s!=NULL) && (*s!='\0')) |
---|
597 | { |
---|
598 | feProtFile = myfopen(s,"w"); |
---|
599 | if (feProtFile==NULL) |
---|
600 | { |
---|
601 | Werror("cannot open %s",s); |
---|
602 | } |
---|
603 | else |
---|
604 | feProt = (BOOLEAN)mode; |
---|
605 | } |
---|
606 | } |
---|
607 | |
---|
608 | |
---|
609 | char* eati(char *s, int *i) |
---|
610 | { |
---|
611 | int l=0; |
---|
612 | |
---|
613 | if (*s >= '0' && *s <= '9') |
---|
614 | { |
---|
615 | *i = 0; |
---|
616 | while (*s >= '0' && *s <= '9') |
---|
617 | { |
---|
618 | *i *= 10; |
---|
619 | *i += *s++ - '0'; |
---|
620 | l++; |
---|
621 | if ((l>=MAX_INT_LEN)||((*i) <0)) |
---|
622 | { |
---|
623 | s-=l; |
---|
624 | Werror("`%s` greater than %d(max. integer representation)", |
---|
625 | s,MAX_INT_VAL); |
---|
626 | return s; |
---|
627 | } |
---|
628 | } |
---|
629 | } |
---|
630 | else *i = 1; |
---|
631 | return s; |
---|
632 | } |
---|
633 | |
---|
634 | #ifndef unix |
---|
635 | // Make sure that mode contains binary option |
---|
636 | FILE* myfopen(char *path, char *mode) |
---|
637 | { |
---|
638 | char mmode[4]; |
---|
639 | int i; |
---|
640 | BOOLEAN done = FALSE; |
---|
641 | |
---|
642 | for (i=0;;i++) |
---|
643 | { |
---|
644 | mmode[i] = mode[i]; |
---|
645 | if (mode[i] == '\0') break; |
---|
646 | if (mode[i] == 'b') done = TRUE; |
---|
647 | } |
---|
648 | |
---|
649 | if (! done) |
---|
650 | { |
---|
651 | mmode[i] = 'b'; |
---|
652 | mmode[i+1] = '\0'; |
---|
653 | } |
---|
654 | return fopen(path, mmode); |
---|
655 | } |
---|
656 | #endif |
---|
657 | |
---|
658 | // replace "\r\n" by " \n" and "\r" by "\n" |
---|
659 | |
---|
660 | size_t myfread(void *ptr, size_t size, size_t nmemb, FILE *stream) |
---|
661 | { |
---|
662 | size_t got = fread(ptr, size, nmemb, stream) * size; |
---|
663 | size_t i; |
---|
664 | |
---|
665 | for (i=0; i<got; i++) |
---|
666 | { |
---|
667 | if ( ((char*) ptr)[i] == '\r') |
---|
668 | { |
---|
669 | if (i+1 < got && ((char*) ptr)[i+1] == '\n') |
---|
670 | ((char*) ptr)[i] = ' '; |
---|
671 | else |
---|
672 | ((char*) ptr)[i] = '\n'; |
---|
673 | } |
---|
674 | } |
---|
675 | return got; |
---|
676 | } |
---|