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/* This file is part of the SvarCOM project and is published under the terms
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/* This file is part of the SvarCOM project and is published under the terms
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* of the MIT license.
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* of the MIT license.
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*
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*
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* Copyright (C) 2021-2022 Mateusz Viste
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* Copyright (C) 2021-2022 Mateusz Viste
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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* Software is furnished to do so, subject to the following conditions:
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*
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*
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* The above copyright notice and this permission notice shall be included in
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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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* all copies or substantial portions of the Software.
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*
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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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* 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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* 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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* 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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* 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
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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* DEALINGS IN THE SOFTWARE.
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*/
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*/
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/*
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/*
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* FOR %variable IN (set) DO command [command-parameters]
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* FOR %variable IN (set) DO command [command-parameters]
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*
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*
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* %variable a replaceable parameter name
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* %variable a replaceable parameter name
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* (set) a set of one of more files. Wildcards allowed.
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* (set) a set of one of more files. Wildcards allowed.
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* command the command to carry out for each matched file
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* command the command to carry out for each matched file
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* command-parameters parameters or switches for the specified command
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* command-parameters parameters or switches for the specified command
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*
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*
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* To use FOR in a batch program, use %%variable instead of %variable
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* To use FOR in a batch program, use %%variable instead of %variable
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*
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*
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* the set of files must be surrounded by parenthesis, and may contain one
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* the set of files must be surrounded by parenthesis, and may contain one
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* or more space-delimited wildcards. Examples:
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* or more space-delimited wildcards. Examples:
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* (file.txt other.txt)
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* (file.txt other.txt)
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* (*.exe *.com *.bat)
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* (*.exe *.com *.bat)
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* (jan*.txt 199201??.txt)
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* (jan*.txt 199201??.txt)
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*/
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*/
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/* Implementation notes:
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/* Implementation notes:
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*
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*
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* For cannot be nested (no "FOR ... do FOR ..." allowed)
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* For cannot be nested (no "FOR ... do FOR ..." allowed)
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*
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*
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* When executed, FOR allocates a "FOR context" to RMOD's memory, this context
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* When executed, FOR allocates a "FOR context" to RMOD's memory, this context
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* holds the memory state of a FindNext iteration, as well as the command
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* holds the memory state of a FindNext iteration, as well as the command
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* to run on each matched file.
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* to run on each matched file.
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*
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*
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* This FOR context is looked at by command.c and used to provide a command
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* This FOR context is looked at by command.c and used to provide a command
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* instead of getting the command from interactive cli or BAT file. Repeats
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* instead of getting the command from interactive cli or BAT file. Repeats
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* until the FindNext buffer stops matching files.
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* until the FindNext buffer stops matching files.
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*
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*
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* This file only provides the help screen of FOR, as well as the FOR-context
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* This file only provides the help screen of FOR, as well as the FOR-context
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* initialization. Actual execution happens within command.c.
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* initialization. Actual execution happens within command.c.
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*/
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*/
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/* normalizing for-loop pattern-list separators.
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* returns a space char if c is a for-pattern separator, c otherwise */
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static char cmd_for_sepnorm(char c) {
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/* the list of valid delimiters has been researched and kindly shared by Robert
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* Riebisch via the ticket at https://osdn.net/projects/svardos/ticket/44058 */
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switch (c) {
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case ' ':
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case '\t':
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case ';':
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case ',':
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case '/':
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case '=':
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return(' '); /* normalize FOR-loop separators to a space */
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default: /* anything else is kept as-is */
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return(c);
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}
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}
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static enum cmd_result cmd_for(struct cmd_funcparam *p) {
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static enum cmd_result cmd_for(struct cmd_funcparam *p) {
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struct forctx *f = (void *)(p->BUFFER);
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struct forctx *f = (void *)(p->BUFFER);
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unsigned short i;
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unsigned short i;
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/* forbid nested FORs */
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/* forbid nested FORs */
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if (p->rmod->forloop) {
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if (p->rmod->forloop) {
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nls_outputnl(18,7); /* FOR cannot be nested */
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nls_outputnl(18,7); /* FOR cannot be nested */
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return(CMD_FAIL);
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return(CMD_FAIL);
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}
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}
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/* help screen ONLY if /? is the only argument */
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/* help screen ONLY if /? is the only argument */
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if ((p->argc == 1) && (imatch(p->argv[0], "/?"))) {
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if ((p->argc == 1) && (imatch(p->argv[0], "/?"))) {
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nls_outputnl(18,0); /* "Runs a specified command for each file in a set of files" */
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nls_outputnl(18,0); /* "Runs a specified command for each file in a set of files" */
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outputnl("");
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outputnl("");
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nls_outputnl(18,1); /* "FOR %variable IN (set) DO command [parameters]" */
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nls_outputnl(18,1); /* "FOR %variable IN (set) DO command [parameters]" */
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outputnl("");
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outputnl("");
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nls_outputnl(18,2); /* "%variable a replaceable parameter name" */
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nls_outputnl(18,2); /* "%variable a replaceable parameter name" */
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nls_outputnl(18,3); /* "(set) a set of one of more files. Wildcards allowed." */
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nls_outputnl(18,3); /* "(set) a set of one of more files. Wildcards allowed." */
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nls_outputnl(18,4); /* "command the command to carry out for each matched file" */
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nls_outputnl(18,4); /* "command the command to carry out for each matched file" */
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nls_outputnl(18,5); /* "parameters parameters or switches for the specified command" */
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nls_outputnl(18,5); /* "parameters parameters or switches for the specified command" */
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outputnl("");
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outputnl("");
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nls_outputnl(18,6); /* "To use FOR in a batch program, use %%variable instead of %variable" */
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nls_outputnl(18,6); /* "To use FOR in a batch program, use %%variable instead of %variable" */
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return(CMD_OK);
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return(CMD_OK);
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}
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}
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/* clear out struct and copy command line to it */
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/* clear out struct and copy command line to it */
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bzero(f, sizeof(*f));
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bzero(f, sizeof(*f));
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strcpy(f->cmd, p->cmdline);
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strcpy(f->cmd, p->cmdline);
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/* locate the %varname (single char) */
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/* locate the %varname (single char) */
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i = p->argoffset;
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i = p->argoffset;
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while (f->cmd[i] == ' ') i++;
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while (f->cmd[i] == ' ') i++;
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if ((f->cmd[i] != '%') || (f->cmd[i+1] == ' ') || (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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if ((f->cmd[i] != '%') || (f->cmd[i+1] == ' ') || (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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f->varname = f->cmd[i+1];
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f->varname = f->cmd[i+1];
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i += 3;
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i += 3;
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/* look (and skip) the "IN" part */
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/* look (and skip) the "IN" part */
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while (f->cmd[i] == ' ') i++;
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while (f->cmd[i] == ' ') i++;
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if (((f->cmd[i] & 0xDF) != 'I') && ((f->cmd[i+1] & 0xDF) != 'N') && (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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if (((f->cmd[i] & 0xDF) != 'I') && ((f->cmd[i+1] & 0xDF) != 'N') && (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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i += 3;
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i += 3;
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/* look for patterns start */
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/* look for patterns start */
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while (f->cmd[i] == ' ') i++;
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while (f->cmd[i] == ' ') i++;
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if (f->cmd[i] != '(') goto INVALID_SYNTAX;
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if (f->cmd[i] != '(') goto INVALID_SYNTAX;
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i++;
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i++;
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while (f->cmd[i] == ' ') i++;
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while (cmd_for_sepnorm(f->cmd[i]) == ' ') i++;
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f->nextpat = i;
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f->nextpat = i;
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/* look for patterns end */
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/* look for patterns end and normalize all separators to a space */
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while ((f->cmd[i] != ')') && (f->cmd[i] != 0)) i++;
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while ((f->cmd[i] != ')') && (f->cmd[i] != 0)) {
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f->cmd[i] = cmd_for_sepnorm(f->cmd[i]);
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i++;
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}
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if (f->cmd[i] != ')') goto INVALID_SYNTAX;
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if (f->cmd[i] != ')') goto INVALID_SYNTAX;
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f->cmd[i++] = 0; /* terminate patterns and move to next field */
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f->cmd[i++] = 0; /* terminate patterns and move to next field */
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/* look (and skip) the "DO" part */
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/* look (and skip) the "DO" part */
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while (f->cmd[i] == ' ') i++;
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while (f->cmd[i] == ' ') i++;
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if (((f->cmd[i] & 0xDF) != 'D') && ((f->cmd[i+1] & 0xDF) != 'O') && (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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if (((f->cmd[i] & 0xDF) != 'D') && ((f->cmd[i+1] & 0xDF) != 'O') && (f->cmd[i+2] != ' ')) goto INVALID_SYNTAX;
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i += 3;
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i += 3;
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while (f->cmd[i] == ' ') i++;
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while (f->cmd[i] == ' ') i++;
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/* rest is the exec string */
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/* rest is the exec string */
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f->exec = i;
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f->exec = i;
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/* alloc memory for the forctx context and copy f to it */
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/* alloc memory for the forctx context and copy f to it */
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p->rmod->forloop = rmod_fcalloc(sizeof(*f), p->rmod->rmodseg, "SVFORCTX");
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p->rmod->forloop = rmod_fcalloc(sizeof(*f), p->rmod->rmodseg, "SVFORCTX");
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if (p->rmod->forloop == NULL) {
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if (p->rmod->forloop == NULL) {
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nls_outputnl_doserr(8);
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nls_outputnl_doserr(8);
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return(CMD_FAIL);
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return(CMD_FAIL);
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}
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}
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_fmemcpy(p->rmod->forloop, f, sizeof(*f));
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_fmemcpy(p->rmod->forloop, f, sizeof(*f));
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return(CMD_OK);
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return(CMD_OK);
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INVALID_SYNTAX:
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INVALID_SYNTAX:
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nls_outputnl(0,1); /* "Invalid syntax" */
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nls_outputnl(0,1); /* "Invalid syntax" */
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return(CMD_FAIL);
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return(CMD_FAIL);
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}
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}
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156 |
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