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|
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//#define _CRT_SECURE_NO_WARNINGS |
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//$Header$ |
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//{43a387a9-4905-4f4c-8e90-506628d6cc11} |
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//------------------------------------------------------------------------------------------------- |
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//Copyright (c) 2018, David T. Ashley |
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// |
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//This file is part of "ets_ifsfscan", a program for identifying gross formatting anomalies in |
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//source files (Windows/ASCII text files only). |
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// |
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//This source code and any program in which it is compiled/used is licensed under the MIT License, |
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//reproduced below. |
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// |
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//Permission is hereby granted, free of charge, to any person obtaining a copy of |
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//this software and associated documentation files(the "Software"), to deal in the |
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//Software without restriction, including without limitation the rights to use, |
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//copy, modify, merge, publish, distribute, sublicense, and / or sell copies of the |
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//Software, and to permit persons to whom the Software is furnished to do so, |
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//subject to the following conditions : |
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// |
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//The above copyright notice and this permission notice shall be included in all |
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//copies or substantial portions of the Software. |
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// |
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//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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//SOFTWARE. |
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//------------------------------------------------------------------------------------------------- |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <tchar.h> |
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#include <time.h> |
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#include <windows.h> |
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|
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#define FCMIOF_HORIZONTAL_BAR_SEP_CHAR ('-') |
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#define FCMIOF_LINE_LEN (78) |
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|
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#ifdef _CRT_SECURE_NO_WARNINGS |
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//#error not set |
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#endif |
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|
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//The last column allowed for a characters below is Column 82 (or it will be |
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//less than aesthetic). |
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const char * const license_preamble[] = |
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{ |
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"ets_ifsfscan, (c) 2018 David T. Ashley (dashley@gmail.com)", |
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"This program's source files, executable files, and all other related files", |
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"(such as Visual Studio project files) are licensed under \"The MIT License\",", |
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"reproduced below." |
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}; |
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|
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const char * const license_text[] = |
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{ |
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"Permission is hereby granted, free of charge, to any person obtaining a copy", |
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"of this software and associated documentation files(the \"Software\"), to deal", |
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"in the Software without restriction, including without limitation the rights", |
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"to use, copy, modify, merge, publish, distribute, sublicense, and / or sell", |
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"copies of the Software, and to permit persons to whom the Software is", |
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"furnished to do so, subject to the following conditions:", |
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"", |
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"The above copyright notice and this permission notice shall be included in", |
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"all copies or substantial portions of the Software.", |
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"", |
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"THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR", |
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"IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,", |
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"FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE", |
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"AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER", |
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"LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,", |
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"OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE", |
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"SOFTWARE." |
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}; |
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|
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const char * const prog_desc_text[] = |
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{ |
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"ets_ifsfscan (mnemonic: Ill-Formed Source File SCAN) is a program for", |
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"detecting gross formatting errors in source files (Windows/ASCII text", |
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"files only). The errors detected are non-ASCII characters, tab characters,", |
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"abnormal end-of-line characters, and trailing whitespace on lines." |
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}; |
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|
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const char * const prog_help_text[] = |
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{ |
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"Usage: ets_ifsfscan [filename_or_wildcard [filename_or_wildcard [...]]]", |
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"", |
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"Notes:", |
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" (1) : Wildcards (\"*\", \"?\") are processed by Windows, so Windows is", |
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" the arbiter of which wildcards are accepted and how they expand.", |
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" (2) : This program never writes to a file, so it cannot destroy data", |
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" (except, possibly, by stdout output redirected to a file).", |
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" (3) : This program accepts no options (like \"-help\" or \"-verbose\").", |
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" (4) : This program accepts only Windows line endings (13-10).", |
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" This program is incompatible with *nix and *nix files.", |
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" (5) : This program accepts only the ASCII character set (it will not", |
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" process UTF-8 or any other encodings).", |
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}; |
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|
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//-------------------------------------------------------------------------------- |
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// T E R M I N A T I O N F U N C T I O N S |
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//-------------------------------------------------------------------------------- |
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void CCMFATAL_fatal(const char *desc, const char *file, size_t line) |
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{ |
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printf("\n"); |
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printf("Fatal error. Must terminate execution.\n"); |
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printf("File: %s, Line: %zu.\n", file, line); |
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printf("Error description: %s\n", desc); |
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exit(4); //Error code 4 for error termination. |
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} |
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|
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//-------------------------------------------------------------------------------- |
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// A S S E R T I O N F U N C T I O N S |
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//-------------------------------------------------------------------------------- |
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void USERASSERT_assert(int assertion, const char *file, size_t line) |
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{ |
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if (! assertion) |
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{ |
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printf("\n"); |
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printf("Assertion failed. It is necessary to use the source code to diagnose\n"); |
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printf("and resolve this error.\n"); |
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printf("File: %s, Line: %zu.\n", file, line); |
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exit(4); //Error code 4 for error termination. |
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} |
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} |
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|
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|
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//-------------------------------------------------------------------------------- |
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// S T R I N G A N D C H A R A C T E R A R R A Y F U N C T I O N S |
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//-------------------------------------------------------------------------------- |
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int STRING_contains_wildcard(const char *s) |
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{ |
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if (strchr(s, '?') != NULL) |
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return(1); |
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else if (strchr(s, '*') != NULL) |
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return(1); |
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else |
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return(0); |
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} |
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|
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int STRING_is_longer_than_maxpath(const char *s) |
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{ |
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if (_MAX_PATH <= 5) |
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return(1); |
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else if (strlen(s) > (_MAX_PATH - 5)) |
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return(1); |
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else |
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return(0); |
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} |
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|
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int STRING_contains_terminating_backslash(const char *s) |
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{ |
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size_t i; |
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|
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i = strlen(s); |
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|
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if (i == 0) |
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{ |
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return(0); |
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} |
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else |
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{ |
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do |
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{ |
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i--; |
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if (s[i] == '\\') |
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return(1); |
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else if ((s[i] != ' ') && (s[i] != '\t')) |
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return(0); |
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} while (i != 0); |
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return(0); |
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} |
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} |
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|
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const char *STRING_vcinfo(size_t which) |
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{ |
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static const char * const vcinfo[] = |
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{ |
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"$HeadURL$", |
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"$Date$", |
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"$Revision$", |
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"$Author$", |
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"Project GUID: {f2e6f1b7-8fc5-4582-9cd7-c153febd11f7}", |
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"c_main.c GUID: {43a387a9-4905-4f4c-8e90-506628d6cc11}", |
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"ets_ifsfscan.cpp GUID: {1ea3115f-1f6d-4f0b-979b-ad92423db59a}", |
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}; |
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|
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if (which < (sizeof(vcinfo) / sizeof(vcinfo[0]))) |
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return(vcinfo[which]); |
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else |
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return(NULL); |
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} |
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|
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//-------------------------------------------------------------------------------- |
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// F O R M A T T E D O U T P U T F U N C T I O N S |
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//-------------------------------------------------------------------------------- |
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int FCMIOF_get_line_len(void) |
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{ |
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return(FCMIOF_LINE_LEN); |
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} |
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|
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void FCMIOF_stream_repchar(FILE *s, char c, unsigned n) |
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{ |
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USERASSERT_assert(s != NULL, __FILE__, __LINE__); |
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|
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while (n--) |
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fprintf(s, "%c", c); |
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} |
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|
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void FCMIOF_repchar(char c, unsigned n) |
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{ |
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while (n--) |
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printf("%c", c); |
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} |
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|
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void FCMIOF_hline(void) |
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{ |
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FCMIOF_repchar(FCMIOF_HORIZONTAL_BAR_SEP_CHAR, FCMIOF_LINE_LEN); |
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printf("\n"); |
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} |
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|
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void FCMIOF_stream_hline(FILE *s) |
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{ |
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USERASSERT_assert(s != NULL, __FILE__, __LINE__); |
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|
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FCMIOF_stream_repchar(s, FCMIOF_HORIZONTAL_BAR_SEP_CHAR, FCMIOF_LINE_LEN); |
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fprintf(s, "\n"); |
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} |
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|
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int is_legal_non_eol_character(char c) |
232 |
{ |
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if ((c >= 32) && (c <= 126)) |
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return(1); |
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else |
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return(0); |
237 |
} |
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|
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int is_illegal_non_eol_character(char c) |
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{ |
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if (((c < 32) || (c > 126)) && (c != 13) && (c != 10)) |
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return(1); |
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else |
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return(0); |
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} |
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|
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int is_tab(char c) |
248 |
{ |
249 |
if (c == 9) |
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return(1); |
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else |
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return(0); |
253 |
} |
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|
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int is_cr(char c) |
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{ |
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if (c == 13) |
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return(1); |
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else |
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return(0); |
261 |
} |
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|
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int is_lf(char c) |
264 |
{ |
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if (c == 10) |
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return(1); |
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else |
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return(0); |
269 |
} |
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|
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void emit_human_friendly_llu(unsigned long long arg) |
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{ |
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size_t i, len; |
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char buffer[100]; |
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|
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sprintf_s(buffer, sizeof(buffer)/sizeof(buffer[0]), "%llu", arg); |
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len = strlen(buffer); |
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|
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for (i = 0; i < len; i++) |
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{ |
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printf("%c", buffer[i]); |
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if (((len-i-1) != 0) && (((len - i - 1) % 3) == 0)) |
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printf(","); |
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} |
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} |
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|
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void emit_file_pos_3tuple(unsigned long long line, unsigned long long col, unsigned long long offset) |
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{ |
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printf(" Line: "); |
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emit_human_friendly_llu(line); |
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printf(", Col: "); |
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emit_human_friendly_llu(col); |
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printf(", Offset: "); |
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emit_human_friendly_llu(offset); |
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printf("\n"); |
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} |
297 |
|
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void process_opened_handle(FILE *f) |
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{ |
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unsigned long long char_no; |
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unsigned long long line_no; |
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unsigned long long col_no; |
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enum {PST_LINE, PST_CR_FOUND, PST_LF_FOUND} state = PST_LINE; |
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int exit_flag = 0; |
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char in_c, prev_c; |
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unsigned char in_uc; |
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int in_i; |
308 |
|
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in_i = fgetc(f); |
310 |
|
311 |
if (in_i == EOF) |
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{ |
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//Zero-length file or error. Because this tool isn't critical, no need to figure out which, exactly. |
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printf(" Zero-length file.\n"); |
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return; |
316 |
} |
317 |
|
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prev_c = ' '; |
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char_no = 0; |
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line_no = 1; |
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col_no = 1; |
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in_c = in_i & 0xff; |
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in_uc = in_i & 0xff; |
324 |
|
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do |
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{ |
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//Illegal characters always get flagged. |
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if (is_illegal_non_eol_character(in_c)) |
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{ |
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emit_file_pos_3tuple(line_no, col_no, char_no); |
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printf(" Illegal character: 0x%02x.\n", ((unsigned)in_uc)); |
332 |
} |
333 |
|
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//printf("Character: %02x State: %u\n", in_c, (unsigned)state); |
335 |
|
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//Run through the state machine, which would look for bad EOL sequences. |
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switch (state) |
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{ |
339 |
case PST_LINE: |
340 |
//Processing non-EOL characters. |
341 |
if (is_lf(in_c)) |
342 |
{ |
343 |
if ((char_no != 0) && (prev_c == ' ')) |
344 |
{ |
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emit_file_pos_3tuple(line_no, col_no, char_no); |
346 |
printf(" Line contains trailing whitespace.\n"); |
347 |
} |
348 |
|
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//Line feeds not allowed without preceding carriage return. |
350 |
emit_file_pos_3tuple(line_no, col_no, char_no); |
351 |
printf(" Out of sequence line feed character (0x0a).\n"); |
352 |
line_no++; |
353 |
col_no = 1; |
354 |
state = PST_LF_FOUND; |
355 |
} |
356 |
else if (is_cr(in_c)) |
357 |
{ |
358 |
if ((char_no != 0) && (prev_c == ' ')) |
359 |
{ |
360 |
emit_file_pos_3tuple(line_no, col_no, char_no); |
361 |
printf(" Line contains trailing whitespace.\n"); |
362 |
} |
363 |
|
364 |
//Legal |
365 |
state = PST_CR_FOUND; |
366 |
} |
367 |
else |
368 |
{ |
369 |
//Ordinary character. |
370 |
col_no++; |
371 |
} |
372 |
break; |
373 |
case PST_CR_FOUND: |
374 |
if (is_lf(in_c)) |
375 |
{ |
376 |
//Legal |
377 |
line_no++; |
378 |
col_no = 1; |
379 |
state = PST_LF_FOUND; |
380 |
} |
381 |
else if (is_cr(in_c)) |
382 |
{ |
383 |
//Back-to-back carriage returns not allowed. |
384 |
emit_file_pos_3tuple(line_no, col_no, char_no); |
385 |
printf(" Out of sequence carriage return character (0x0D).\n"); |
386 |
col_no++; |
387 |
} |
388 |
else |
389 |
{ |
390 |
//Ordinary character. Illegal, because LF must follow CR. |
391 |
emit_file_pos_3tuple(line_no, col_no, char_no); |
392 |
printf(" Carriage return followed by 0x%02x rather than LF.\n", (unsigned)in_uc); |
393 |
col_no++; |
394 |
} |
395 |
break; |
396 |
case PST_LF_FOUND: |
397 |
if (is_lf(in_c)) |
398 |
{ |
399 |
//Illegal. Back-to-back line feeds not allowed. |
400 |
emit_file_pos_3tuple(line_no, col_no, char_no); |
401 |
printf(" Out of sequence line feed character (0x0A).\n"); |
402 |
line_no++; |
403 |
col_no = 1; |
404 |
} |
405 |
else if (is_cr(in_c)) |
406 |
{ |
407 |
//Legal. Blank lines are fine. |
408 |
col_no++; |
409 |
state = PST_CR_FOUND; |
410 |
} |
411 |
else |
412 |
{ |
413 |
//Ordinary character. Legal. |
414 |
col_no++; |
415 |
state = PST_LINE; |
416 |
} |
417 |
break; |
418 |
default: |
419 |
USERASSERT_assert(0, __FILE__, __LINE__); |
420 |
break; |
421 |
} |
422 |
|
423 |
in_i = fgetc(f); |
424 |
prev_c = in_c; |
425 |
in_c = in_i & 0xff; |
426 |
in_uc = in_i & 0xff; |
427 |
char_no++; |
428 |
if (in_i == EOF) |
429 |
{ |
430 |
if (state != PST_LF_FOUND) |
431 |
{ |
432 |
emit_file_pos_3tuple(line_no, col_no, char_no-1); |
433 |
printf(" Final line of file does not have CR/LF sequence.\n"); |
434 |
} |
435 |
if ((state == PST_LINE) && (prev_c == ' ')) |
436 |
{ |
437 |
emit_file_pos_3tuple(line_no, col_no, char_no - 1); |
438 |
printf(" Final line contains trailing whitespace.\n"); |
439 |
} |
440 |
|
441 |
exit_flag = 1; |
442 |
} |
443 |
} while (!exit_flag); |
444 |
} |
445 |
|
446 |
void process_file_by_name(const char *s) |
447 |
{ |
448 |
FILE *f; |
449 |
|
450 |
printf(" %s\n", s); |
451 |
|
452 |
f = fopen(s, "rb"); |
453 |
|
454 |
if (!f) |
455 |
{ |
456 |
printf(" fopen() failed.\n"); |
457 |
} |
458 |
else |
459 |
{ |
460 |
process_opened_handle(f); |
461 |
|
462 |
if (fclose(f)) |
463 |
{ |
464 |
printf(" fclose() failed.\n"); |
465 |
} |
466 |
} |
467 |
} |
468 |
|
469 |
void process_filename_or_wildcard(const char *fname_or_wildcard) |
470 |
{ |
471 |
HANDLE hFind; |
472 |
WIN32_FIND_DATA FindFileData; |
473 |
|
474 |
//Incoming pointer is worthy of an assertion. The OS should not every deliver |
475 |
//a NULL pointer or empty string to us. |
476 |
USERASSERT_assert(fname_or_wildcard != NULL, __FILE__, __LINE__); |
477 |
USERASSERT_assert(strlen(fname_or_wildcard) > 0, __FILE__, __LINE__); |
478 |
|
479 |
printf("%s\n", fname_or_wildcard); |
480 |
|
481 |
if (STRING_is_longer_than_maxpath(fname_or_wildcard)) |
482 |
{ |
483 |
printf(" Specified filename or wildcard too long--cannot process.\n"); |
484 |
} |
485 |
else if (STRING_contains_terminating_backslash(fname_or_wildcard)) |
486 |
{ |
487 |
printf(" Specified filename or wildcard contains terminating \"\\\"--cannot process.\n"); |
488 |
} |
489 |
else if (STRING_contains_wildcard(fname_or_wildcard)) |
490 |
{ |
491 |
hFind = FindFirstFile((TCHAR *)fname_or_wildcard, &FindFileData); |
492 |
|
493 |
if (hFind == INVALID_HANDLE_VALUE) |
494 |
{ |
495 |
printf(" Wildcard does not match existing files or is invalid.\n"); |
496 |
} |
497 |
else |
498 |
{ |
499 |
char path_drive[_MAX_PATH + 5]; |
500 |
char path_dir[_MAX_PATH + 5]; |
501 |
char path_fname[_MAX_PATH + 5]; |
502 |
char path_ext[_MAX_PATH + 5]; |
503 |
char path_full[_MAX_PATH + 5]; |
504 |
|
505 |
if (!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) |
506 |
{ |
507 |
_splitpath(fname_or_wildcard, path_drive, path_dir, path_fname, path_ext); |
508 |
|
509 |
strcpy(path_full, path_drive); |
510 |
strcat(path_full, path_dir); |
511 |
strcat(path_full, FindFileData.cFileName); |
512 |
|
513 |
process_file_by_name(path_full); |
514 |
} |
515 |
|
516 |
while (FindNextFile(hFind, &FindFileData) != 0) |
517 |
{ |
518 |
if (!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)) |
519 |
{ |
520 |
_splitpath(fname_or_wildcard, path_drive, path_dir, path_fname, path_ext); |
521 |
|
522 |
strcpy(path_full, path_drive); |
523 |
strcat(path_full, path_dir); |
524 |
strcat(path_full, FindFileData.cFileName); |
525 |
|
526 |
process_file_by_name(path_full); |
527 |
} |
528 |
} |
529 |
} |
530 |
|
531 |
if (hFind != INVALID_HANDLE_VALUE) |
532 |
{ |
533 |
FindClose(hFind); |
534 |
} |
535 |
} |
536 |
else |
537 |
{ |
538 |
process_file_by_name(fname_or_wildcard); |
539 |
} |
540 |
} |
541 |
|
542 |
void emit_no_par_documentation(void) |
543 |
{ |
544 |
size_t i; |
545 |
|
546 |
FCMIOF_stream_hline(stdout); |
547 |
for (i = 0; i < (sizeof(prog_desc_text) / sizeof(prog_desc_text[0])); i++) |
548 |
printf("%s\n", prog_desc_text[i]); |
549 |
FCMIOF_stream_hline(stdout); |
550 |
for (i = 0; i < (sizeof(license_preamble) / sizeof(license_preamble[0])); i++) |
551 |
printf("%s\n", license_preamble[i]); |
552 |
FCMIOF_stream_hline(stdout); |
553 |
for (i = 0; i < (sizeof(license_text) / sizeof(license_text[0])); i++) |
554 |
printf("%s\n", license_text[i]); |
555 |
FCMIOF_stream_hline(stdout); |
556 |
printf("Program built on %s at %s.\n", __DATE__, __TIME__); |
557 |
i = 0; |
558 |
while (STRING_vcinfo(i)) |
559 |
{ |
560 |
printf("%s\n", STRING_vcinfo(i)); |
561 |
i++; |
562 |
} |
563 |
FCMIOF_stream_hline(stdout); |
564 |
for (i = 0; i < (sizeof(prog_help_text) / sizeof(prog_help_text[0])); i++) |
565 |
printf("%s\n", prog_help_text[i]); |
566 |
FCMIOF_stream_hline(stdout); |
567 |
} |
568 |
|
569 |
void emit_execution_preamble(void) |
570 |
{ |
571 |
FCMIOF_stream_hline(stdout); |
572 |
printf("Use \"ets_ifsfscan\" with no parameters to obtain license and help information.\n"); |
573 |
FCMIOF_stream_hline(stdout); |
574 |
} |
575 |
|
576 |
int c_main(int argc, char **argv) |
577 |
{ |
578 |
int i; |
579 |
|
580 |
if (argc <= 1) |
581 |
{ |
582 |
//This is most likely someone trying to figure out what the program is or does. |
583 |
//Spit everything. |
584 |
emit_no_par_documentation(); |
585 |
} |
586 |
else |
587 |
{ |
588 |
emit_execution_preamble(); |
589 |
|
590 |
//Every argument beyond the program name has to be either a file name or |
591 |
//wildcard. Just process them in order. |
592 |
for (i = 1; i < argc; i++) |
593 |
process_filename_or_wildcard(argv[i]); |
594 |
|
595 |
FCMIOF_stream_hline(stdout); |
596 |
} |
597 |
|
598 |
return 0; |
599 |
} |