/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/c_datd/strfuncs.c,v 1.1.1.1 2001/06/13 04:30:59 dtashley Exp $ */ //-------------------------------------------------------------------------------- //Copyright 2001 David T. Ashley //------------------------------------------------------------------------------------------------- //This source code and any program in which it is compiled/used is provided under the GNU GENERAL //PUBLIC LICENSE, Version 3, full license text below. //------------------------------------------------------------------------------------------------- // GNU GENERAL PUBLIC LICENSE // Version 3, 29 June 2007 // // Copyright (C) 2007 Free Software Foundation, Inc. // Everyone is permitted to copy and distribute verbatim copies // of this license document, but changing it is not allowed. // // Preamble // // The GNU General Public License is a free, copyleft license for //software and other kinds of works. // // The licenses for most software and other practical works are designed //to take away your freedom to share and change the works. By contrast, //the GNU General Public License is intended to guarantee your freedom to //share and change all versions of a program--to make sure it remains free //software for all its users. We, the Free Software Foundation, use the //GNU General Public License for most of our software; it applies also to //any other work released this way by its authors. You can apply it to //your programs, too. // // When we speak of free software, we are referring to freedom, not //price. Our General Public Licenses are designed to make sure that you //have the freedom to distribute copies of free software (and charge for //them if you wish), that you receive source code or can get it if you //want it, that you can change the software or use pieces of it in new //free programs, and that you know you can do these things. // // To protect your rights, we need to prevent others from denying you //these rights or asking you to surrender the rights. Therefore, you have //certain responsibilities if you distribute copies of the software, or if //you modify it: responsibilities to respect the freedom of others. // // For example, if you distribute copies of such a program, whether //gratis or for a fee, you must pass on to the recipients the same //freedoms that you received. You must make sure that they, too, receive //or can get the source code. And you must show them these terms so they //know their rights. // // Developers that use the GNU GPL protect your rights with two steps: //(1) assert copyright on the software, and (2) offer you this License //giving you legal permission to copy, distribute and/or modify it. // // For the developers' and authors' protection, the GPL clearly explains //that there is no warranty for this free software. For both users' and //authors' sake, the GPL requires that modified versions be marked as //changed, so that their problems will not be attributed erroneously to //authors of previous versions. // // Some devices are designed to deny users access to install or run //modified versions of the software inside them, although the manufacturer //can do so. This is fundamentally incompatible with the aim of //protecting users' freedom to change the software. The systematic //pattern of such abuse occurs in the area of products for individuals to //use, which is precisely where it is most unacceptable. Therefore, we //have designed this version of the GPL to prohibit the practice for those //products. If such problems arise substantially in other domains, we //stand ready to extend this provision to those domains in future versions //of the GPL, as needed to protect the freedom of users. // // Finally, every program is threatened constantly by software patents. //States should not allow patents to restrict development and use of //software on general-purpose computers, but in those that do, we wish to //avoid the special danger that patents applied to a free program could //make it effectively proprietary. To prevent this, the GPL assures that //patents cannot be used to render the program non-free. // // The precise terms and conditions for copying, distribution and //modification follow. // // TERMS AND CONDITIONS // // 0. Definitions. // // "This License" refers to version 3 of the GNU General Public License. // // "Copyright" also means copyright-like laws that apply to other kinds of //works, such as semiconductor masks. // // "The Program" refers to any copyrightable work licensed under this //License. Each licensee is addressed as "you". "Licensees" and //"recipients" may be individuals or organizations. // // To "modify" a work means to copy from or adapt all or part of the work //in a fashion requiring copyright permission, other than the making of an //exact copy. The resulting work is called a "modified version" of the //earlier work or a work "based on" the earlier work. // // A "covered work" means either the unmodified Program or a work based //on the Program. // // To "propagate" a work means to do anything with it that, without //permission, would make you directly or secondarily liable for //infringement under applicable copyright law, except executing it on a //computer or modifying a private copy. Propagation includes copying, //distribution (with or without modification), making available to the //public, and in some countries other activities as well. // // To "convey" a work means any kind of propagation that enables other //parties to make or receive copies. Mere interaction with a user through //a computer network, with no transfer of a copy, is not conveying. // // An interactive user interface displays "Appropriate Legal Notices" //to the extent that it includes a convenient and prominently visible //feature that (1) displays an appropriate copyright notice, and (2) //tells the user that there is no warranty for the work (except to the //extent that warranties are provided), that licensees may convey the //work under this License, and how to view a copy of this License. If //the interface presents a list of user commands or options, such as a //menu, a prominent item in the list meets this criterion. // // 1. Source Code. // // The "source code" for a work means the preferred form of the work //for making modifications to it. "Object code" means any non-source //form of a work. // // A "Standard Interface" means an interface that either is an official //standard defined by a recognized standards body, or, in the case of //interfaces specified for a particular programming language, one that //is widely used among developers working in that language. // // The "System Libraries" of an executable work include anything, other //than the work as a whole, that (a) is included in the normal form of //packaging a Major Component, but which is not part of that Major //Component, and (b) serves only to enable use of the work with that //Major Component, or to implement a Standard Interface for which an //implementation is available to the public in source code form. A //"Major Component", in this context, means a major essential component //(kernel, window system, and so on) of the specific operating system //(if any) on which the executable work runs, or a compiler used to //produce the work, or an object code interpreter used to run it. // // The "Corresponding Source" for a work in object code form means all //the source code needed to generate, install, and (for an executable //work) run the object code and to modify the work, including scripts to //control those activities. However, it does not include the work's //System Libraries, or general-purpose tools or generally available free //programs which are used unmodified in performing those activities but //which are not part of the work. For example, Corresponding Source //includes interface definition files associated with source files for //the work, and the source code for shared libraries and dynamically //linked subprograms that the work is specifically designed to require, //such as by intimate data communication or control flow between those //subprograms and other parts of the work. // // The Corresponding Source need not include anything that users //can regenerate automatically from other parts of the Corresponding //Source. // // The Corresponding Source for a work in source code form is that //same work. // // 2. Basic Permissions. // // All rights granted under this License are granted for the term of //copyright on the Program, and are irrevocable provided the stated //conditions are met. This License explicitly affirms your unlimited //permission to run the unmodified Program. The output from running a //covered work is covered by this License only if the output, given its //content, constitutes a covered work. This License acknowledges your //rights of fair use or other equivalent, as provided by copyright law. // // You may make, run and propagate covered works that you do not //convey, without conditions so long as your license otherwise remains //in force. You may convey covered works to others for the sole purpose //of having them make modifications exclusively for you, or provide you //with facilities for running those works, provided that you comply with //the terms of this License in conveying all material for which you do //not control copyright. Those thus making or running the covered works //for you must do so exclusively on your behalf, under your direction //and control, on terms that prohibit them from making any copies of //your copyrighted material outside their relationship with you. // // Conveying under any other circumstances is permitted solely under //the conditions stated below. Sublicensing is not allowed; section 10 //makes it unnecessary. // // 3. Protecting Users' Legal Rights From Anti-Circumvention Law. // // No covered work shall be deemed part of an effective technological //measure under any applicable law fulfilling obligations under article //11 of the WIPO copyright treaty adopted on 20 December 1996, or //similar laws prohibiting or restricting circumvention of such //measures. // // When you convey a covered work, you waive any legal power to forbid //circumvention of technological measures to the extent such circumvention //is effected by exercising rights under this License with respect to //the covered work, and you disclaim any intention to limit operation or //modification of the work as a means of enforcing, against the work's //users, your or third parties' legal rights to forbid circumvention of //technological measures. // // 4. Conveying Verbatim Copies. // // You may convey verbatim copies of the Program's source code as you //receive it, in any medium, provided that you conspicuously and //appropriately publish on each copy an appropriate copyright notice; //keep intact all notices stating that this License and any //non-permissive terms added in accord with section 7 apply to the code; //keep intact all notices of the absence of any warranty; and give all //recipients a copy of this License along with the Program. // // You may charge any price or no price for each copy that you convey, //and you may offer support or warranty protection for a fee. // // 5. Conveying Modified Source Versions. // // You may convey a work based on the Program, or the modifications to //produce it from the Program, in the form of source code under the //terms of section 4, provided that you also meet all of these conditions: // // a) The work must carry prominent notices stating that you modified // it, and giving a relevant date. // // b) The work must carry prominent notices stating that it is // released under this License and any conditions added under section // 7. This requirement modifies the requirement in section 4 to // "keep intact all notices". // // c) You must license the entire work, as a whole, under this // License to anyone who comes into possession of a copy. This // License will therefore apply, along with any applicable section 7 // additional terms, to the whole of the work, and all its parts, // regardless of how they are packaged. This License gives no // permission to license the work in any other way, but it does not // invalidate such permission if you have separately received it. // // d) If the work has interactive user interfaces, each must display // Appropriate Legal Notices; however, if the Program has interactive // interfaces that do not display Appropriate Legal Notices, your // work need not make them do so. // // A compilation of a covered work with other separate and independent //works, which are not by their nature extensions of the covered work, //and which are not combined with it such as to form a larger program, //in or on a volume of a storage or distribution medium, is called an //"aggregate" if the compilation and its resulting copyright are not //used to limit the access or legal rights of the compilation's users //beyond what the individual works permit. Inclusion of a covered work //in an aggregate does not cause this License to apply to the other //parts of the aggregate. // // 6. Conveying Non-Source Forms. // // You may convey a covered work in object code form under the terms //of sections 4 and 5, provided that you also convey the //machine-readable Corresponding Source under the terms of this License, //in one of these ways: // // a) Convey the object code in, or embodied in, a physical product // (including a physical distribution medium), accompanied by the // Corresponding Source fixed on a durable physical medium // customarily used for software interchange. // // b) Convey the object code in, or embodied in, a physical product // (including a physical distribution medium), accompanied by a // written offer, valid for at least three years and valid for as // long as you offer spare parts or customer support for that product // model, to give anyone who possesses the object code either (1) a // copy of the Corresponding Source for all the software in the // product that is covered by this License, on a durable physical // medium customarily used for software interchange, for a price no // more than your reasonable cost of physically performing this // conveying of source, or (2) access to copy the // Corresponding Source from a network server at no charge. // // c) Convey individual copies of the object code with a copy of the // written offer to provide the Corresponding Source. This // alternative is allowed only occasionally and noncommercially, and // only if you received the object code with such an offer, in accord // with subsection 6b. // // d) Convey the object code by offering access from a designated // place (gratis or for a charge), and offer equivalent access to the // Corresponding Source in the same way through the same place at no // further charge. You need not require recipients to copy the // Corresponding Source along with the object code. If the place to // copy the object code is a network server, the Corresponding Source // may be on a different server (operated by you or a third party) // that supports equivalent copying facilities, provided you maintain // clear directions next to the object code saying where to find the // Corresponding Source. Regardless of what server hosts the // Corresponding Source, you remain obligated to ensure that it is // available for as long as needed to satisfy these requirements. // // e) Convey the object code using peer-to-peer transmission, provided // you inform other peers where the object code and Corresponding // Source of the work are being offered to the general public at no // charge under subsection 6d. // // A separable portion of the object code, whose source code is excluded //from the Corresponding Source as a System Library, need not be //included in conveying the object code work. // // A "User Product" is either (1) a "consumer product", which means any //tangible personal property which is normally used for personal, family, //or household purposes, or (2) anything designed or sold for incorporation //into a dwelling. In determining whether a product is a consumer product, //doubtful cases shall be resolved in favor of coverage. For a particular //product received by a particular user, "normally used" refers to a //typical or common use of that class of product, regardless of the status //of the particular user or of the way in which the particular user //actually uses, or expects or is expected to use, the product. A product //is a consumer product regardless of whether the product has substantial //commercial, industrial or non-consumer uses, unless such uses represent //the only significant mode of use of the product. // // "Installation Information" for a User Product means any methods, //procedures, authorization keys, or other information required to install //and execute modified versions of a covered work in that User Product from //a modified version of its Corresponding Source. The information must //suffice to ensure that the continued functioning of the modified object //code is in no case prevented or interfered with solely because //modification has been made. // // If you convey an object code work under this section in, or with, or //specifically for use in, a User Product, and the conveying occurs as //part of a transaction in which the right of possession and use of the //User Product is transferred to the recipient in perpetuity or for a //fixed term (regardless of how the transaction is characterized), the //Corresponding Source conveyed under this section must be accompanied //by the Installation Information. But this requirement does not apply //if neither you nor any third party retains the ability to install //modified object code on the User Product (for example, the work has //been installed in ROM). // // The requirement to provide Installation Information does not include a //requirement to continue to provide support service, warranty, or updates //for a work that has been modified or installed by the recipient, or for //the User Product in which it has been modified or installed. Access to a //network may be denied when the modification itself materially and //adversely affects the operation of the network or violates the rules and //protocols for communication across the network. // // Corresponding Source conveyed, and Installation Information provided, //in accord with this section must be in a format that is publicly //documented (and with an implementation available to the public in //source code form), and must require no special password or key for //unpacking, reading or copying. // // 7. Additional Terms. // // "Additional permissions" are terms that supplement the terms of this //License by making exceptions from one or more of its conditions. //Additional permissions that are applicable to the entire Program shall //be treated as though they were included in this License, to the extent //that they are valid under applicable law. If additional permissions //apply only to part of the Program, that part may be used separately //under those permissions, but the entire Program remains governed by //this License without regard to the additional permissions. // // When you convey a copy of a covered work, you may at your option //remove any additional permissions from that copy, or from any part of //it. (Additional permissions may be written to require their own //removal in certain cases when you modify the work.) You may place //additional permissions on material, added by you to a covered work, //for which you have or can give appropriate copyright permission. // // Notwithstanding any other provision of this License, for material you //add to a covered work, you may (if authorized by the copyright holders of //that material) supplement the terms of this License with terms: // // a) Disclaiming warranty or limiting liability differently from the // terms of sections 15 and 16 of this License; or // // b) Requiring preservation of specified reasonable legal notices or // author attributions in that material or in the Appropriate Legal // Notices displayed by works containing it; or // // c) Prohibiting misrepresentation of the origin of that material, or // requiring that modified versions of such material be marked in // reasonable ways as different from the original version; or // // d) Limiting the use for publicity purposes of names of licensors or // authors of the material; or // // e) Declining to grant rights under trademark law for use of some // trade names, trademarks, or service marks; or // // f) Requiring indemnification of licensors and authors of that // material by anyone who conveys the material (or modified versions of // it) with contractual assumptions of liability to the recipient, for // any liability that these contractual assumptions directly impose on // those licensors and authors. // // All other non-permissive additional terms are considered "further //restrictions" within the meaning of section 10. If the Program as you //received it, or any part of it, contains a notice stating that it is //governed by this License along with a term that is a further //restriction, you may remove that term. If a license document contains //a further restriction but permits relicensing or conveying under this //License, you may add to a covered work material governed by the terms //of that license document, provided that the further restriction does //not survive such relicensing or conveying. // // If you add terms to a covered work in accord with this section, you //must place, in the relevant source files, a statement of the //additional terms that apply to those files, or a notice indicating //where to find the applicable terms. // // Additional terms, permissive or non-permissive, may be stated in the //form of a separately written license, or stated as exceptions; //the above requirements apply either way. // // 8. Termination. // // You may not propagate or modify a covered work except as expressly //provided under this License. Any attempt otherwise to propagate or //modify it is void, and will automatically terminate your rights under //this License (including any patent licenses granted under the third //paragraph of section 11). // // However, if you cease all violation of this License, then your //license from a particular copyright holder is reinstated (a) //provisionally, unless and until the copyright holder explicitly and //finally terminates your license, and (b) permanently, if the copyright //holder fails to notify you of the violation by some reasonable means //prior to 60 days after the cessation. // // Moreover, your license from a particular copyright holder is //reinstated permanently if the copyright holder notifies you of the //violation by some reasonable means, this is the first time you have //received notice of violation of this License (for any work) from that //copyright holder, and you cure the violation prior to 30 days after //your receipt of the notice. // // Termination of your rights under this section does not terminate the //licenses of parties who have received copies or rights from you under //this License. If your rights have been terminated and not permanently //reinstated, you do not qualify to receive new licenses for the same //material under section 10. // // 9. Acceptance Not Required for Having Copies. // // You are not required to accept this License in order to receive or //run a copy of the Program. Ancillary propagation of a covered work //occurring solely as a consequence of using peer-to-peer transmission //to receive a copy likewise does not require acceptance. However, //nothing other than this License grants you permission to propagate or //modify any covered work. These actions infringe copyright if you do //not accept this License. Therefore, by modifying or propagating a //covered work, you indicate your acceptance of this License to do so. // // 10. Automatic Licensing of Downstream Recipients. // // Each time you convey a covered work, the recipient automatically //receives a license from the original licensors, to run, modify and //propagate that work, subject to this License. You are not responsible //for enforcing compliance by third parties with this License. // // An "entity transaction" is a transaction transferring control of an //organization, or substantially all assets of one, or subdividing an //organization, or merging organizations. If propagation of a covered //work results from an entity transaction, each party to that //transaction who receives a copy of the work also receives whatever //licenses to the work the party's predecessor in interest had or could //give under the previous paragraph, plus a right to possession of the //Corresponding Source of the work from the predecessor in interest, if //the predecessor has it or can get it with reasonable efforts. // // You may not impose any further restrictions on the exercise of the //rights granted or affirmed under this License. For example, you may //not impose a license fee, royalty, or other charge for exercise of //rights granted under this License, and you may not initiate litigation //(including a cross-claim or counterclaim in a lawsuit) alleging that //any patent claim is infringed by making, using, selling, offering for //sale, or importing the Program or any portion of it. // // 11. Patents. // // A "contributor" is a copyright holder who authorizes use under this //License of the Program or a work on which the Program is based. The //work thus licensed is called the contributor's "contributor version". // // A contributor's "essential patent claims" are all patent claims //owned or controlled by the contributor, whether already acquired or //hereafter acquired, that would be infringed by some manner, permitted //by this License, of making, using, or selling its contributor version, //but do not include claims that would be infringed only as a //consequence of further modification of the contributor version. For //purposes of this definition, "control" includes the right to grant //patent sublicenses in a manner consistent with the requirements of //this License. // // Each contributor grants you a non-exclusive, worldwide, royalty-free //patent license under the contributor's essential patent claims, to //make, use, sell, offer for sale, import and otherwise run, modify and //propagate the contents of its contributor version. // // In the following three paragraphs, a "patent license" is any express //agreement or commitment, however denominated, not to enforce a patent //(such as an express permission to practice a patent or covenant not to //sue for patent infringement). To "grant" such a patent license to a //party means to make such an agreement or commitment not to enforce a //patent against the party. // // If you convey a covered work, knowingly relying on a patent license, //and the Corresponding Source of the work is not available for anyone //to copy, free of charge and under the terms of this License, through a //publicly available network server or other readily accessible means, //then you must either (1) cause the Corresponding Source to be so //available, or (2) arrange to deprive yourself of the benefit of the //patent license for this particular work, or (3) arrange, in a manner //consistent with the requirements of this License, to extend the patent //license to downstream recipients. "Knowingly relying" means you have //actual knowledge that, but for the patent license, your conveying the //covered work in a country, or your recipient's use of the covered work //in a country, would infringe one or more identifiable patents in that //country that you have reason to believe are valid. // // If, pursuant to or in connection with a single transaction or //arrangement, you convey, or propagate by procuring conveyance of, a //covered work, and grant a patent license to some of the parties //receiving the covered work authorizing them to use, propagate, modify //or convey a specific copy of the covered work, then the patent license //you grant is automatically extended to all recipients of the covered //work and works based on it. // // A patent license is "discriminatory" if it does not include within //the scope of its coverage, prohibits the exercise of, or is //conditioned on the non-exercise of one or more of the rights that are //specifically granted under this License. You may not convey a covered //work if you are a party to an arrangement with a third party that is //in the business of distributing software, under which you make payment //to the third party based on the extent of your activity of conveying //the work, and under which the third party grants, to any of the //parties who would receive the covered work from you, a discriminatory //patent license (a) in connection with copies of the covered work //conveyed by you (or copies made from those copies), or (b) primarily //for and in connection with specific products or compilations that //contain the covered work, unless you entered into that arrangement, //or that patent license was granted, prior to 28 March 2007. // // Nothing in this License shall be construed as excluding or limiting //any implied license or other defenses to infringement that may //otherwise be available to you under applicable patent law. // // 12. No Surrender of Others' Freedom. // // If conditions are imposed on you (whether by court order, agreement or //otherwise) that contradict the conditions of this License, they do not //excuse you from the conditions of this License. If you cannot convey a //covered work so as to satisfy simultaneously your obligations under this //License and any other pertinent obligations, then as a consequence you may //not convey it at all. For example, if you agree to terms that obligate you //to collect a royalty for further conveying from those to whom you convey //the Program, the only way you could satisfy both those terms and this //License would be to refrain entirely from conveying the Program. // // 13. Use with the GNU Affero General Public License. // // Notwithstanding any other provision of this License, you have //permission to link or combine any covered work with a work licensed //under version 3 of the GNU Affero General Public License into a single //combined work, and to convey the resulting work. The terms of this //License will continue to apply to the part which is the covered work, //but the special requirements of the GNU Affero General Public License, //section 13, concerning interaction through a network will apply to the //combination as such. // // 14. Revised Versions of this License. // // The Free Software Foundation may publish revised and/or new versions of //the GNU General Public License from time to time. Such new versions will //be similar in spirit to the present version, but may differ in detail to //address new problems or concerns. // // Each version is given a distinguishing version number. If the //Program specifies that a certain numbered version of the GNU General //Public License "or any later version" applies to it, you have the //option of following the terms and conditions either of that numbered //version or of any later version published by the Free Software //Foundation. If the Program does not specify a version number of the //GNU General Public License, you may choose any version ever published //by the Free Software Foundation. // // If the Program specifies that a proxy can decide which future //versions of the GNU General Public License can be used, that proxy's //public statement of acceptance of a version permanently authorizes you //to choose that version for the Program. // // Later license versions may give you additional or different //permissions. However, no additional obligations are imposed on any //author or copyright holder as a result of your choosing to follow a //later version. // // 15. Disclaimer of Warranty. // // THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY //APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT //HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY //OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, //THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR //PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM //IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF //ALL NECESSARY SERVICING, REPAIR OR CORRECTION. // // 16. Limitation of Liability. // // IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING //WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS //THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY //GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE //USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF //DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD //PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), //EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF //SUCH DAMAGES. // // 17. Interpretation of Sections 15 and 16. // // If the disclaimer of warranty and limitation of liability provided //above cannot be given local legal effect according to their terms, //reviewing courts shall apply local law that most closely approximates //an absolute waiver of all civil liability in connection with the //Program, unless a warranty or assumption of liability accompanies a //copy of the Program in return for a fee. // // END OF TERMS AND CONDITIONS // // How to Apply These Terms to Your New Programs // // If you develop a new program, and you want it to be of the greatest //possible use to the public, the best way to achieve this is to make it //free software which everyone can redistribute and change under these terms. // // To do so, attach the following notices to the program. It is safest //to attach them to the start of each source file to most effectively //state the exclusion of warranty; and each file should have at least //the "copyright" line and a pointer to where the full notice is found. // // // Copyright (C) // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // //Also add information on how to contact you by electronic and paper mail. // // If the program does terminal interaction, make it output a short //notice like this when it starts in an interactive mode: // // Copyright (C) // This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. // This is free software, and you are welcome to redistribute it // under certain conditions; type `show c' for details. // //The hypothetical commands `show w' and `show c' should show the appropriate //parts of the General Public License. Of course, your program's commands //might be different; for a GUI interface, you would use an "about box". // // You should also get your employer (if you work as a programmer) or school, //if any, to sign a "copyright disclaimer" for the program, if necessary. //For more information on this, and how to apply and follow the GNU GPL, see //. // // The GNU General Public License does not permit incorporating your program //into proprietary programs. If your program is a subroutine library, you //may consider it more useful to permit linking proprietary applications with //the library. If this is what you want to do, use the GNU Lesser General //Public License instead of this License. But first, please read //. //------------------------------------------------------------------------------------------------- //-------------------------------------------------------------------------------- /* IJS_SM_FILE_PUBLIC */ #define MODULE_STRFUNCS #include #include "strfuncs.h" //Converts from an unsigned char quantity to a hexadecimal digit, with //upper-case/lower-case option. Only the lowest four bits are considered. DECMOD_STRFUNCS char Strfuncs_NibbleToHexadecimalChar(unsigned char arg, int use_upper_case) { char rv; switch (arg & 0x0F) { case 0: rv = '0'; break; case 1: rv = '1'; break; case 2: rv = '2'; break; case 3: rv = '3'; break; case 4: rv = '4'; break; case 5: rv = '5'; break; case 6: rv = '6'; break; case 7: rv = '7'; break; case 8: rv = '8'; break; case 9: rv = '9'; break; case 10: rv = 'A'; break; case 11: rv = 'B'; break; case 12: rv = 'C'; break; case 13: rv = 'D'; break; case 14: rv = 'E'; break; case 15: rv = 'F'; break; } //If upper-case is not desired, convert to lower. if (!use_upper_case && (rv >= 'A')) rv += ('a'-'A'); return(rv); } //Given a single unsigned long number, assigns eight consecutive characters of a //string to be the hexadecimal digits of the number. The eight characters must //already be allocated in the caller's area. An option is provided to use //upper-case or lower-case. The caller is responsible for null termination. DECMOD_STRFUNCS void Strfuncs_UlToHexString(unsigned long num, char *output, int use_upper_case) { unsigned i; for (i=0; i<8; i++) { output[7-i] = Strfuncs_NibbleToHexadecimalChar((unsigned char)num, use_upper_case); num >>= 4; } } //Returns true if substr is a substring of arg. An empty string is a substring //of anything except a NULL pointer, and a NULL pointer is a substring of //anything. DECMOD_STRFUNCS int Strfuncs_IsSubstring(const char *substr, const char *arg) { size_t i; if (!substr) { return(1); //A NULL pointer is a substring of anything. } if (!arg) { return(0); //arg is NULL but substr is not, no substring. } //Will not be here unless both pointers are valid. These are the //non-degenerate cases. i = 0; while(1) { if (!substr[i]) { return(1); //Ran out of substr chars before arg chars. Is a substring. } if (!arg[i]) { return(0); //Ran out of arg characters with substr chars still remaining. //Definitely not a substring. } //Have exhausted neither string. Not a substring if lack of equality. if (substr[i] != arg[i]) { return(0); //Definitely not a substring. } //Can't make a determination. Advance to next character. i++; } } //Returns version control string for file. // DECMOD_STRFUNCS const char *StrfuncsCversion(void) { return ("$Revision: 1.1.1.1 $ $Modtime: 1/01/01 11:39p $ $Author: dtashley $"); } //Returns version control string for associated .H file. // DECMOD_STRFUNCS const char *StrfuncsHversion(void) { return (STRFUNCS_H_VERSION); } /* $History: strfuncs.c $ * * ***************** Version 1 ***************** * User: Dtashley Date: 1/01/01 Time: 11:39p * Created in $/IjuScripter, IjuConsole/Source/C-language Modules * Initial check-in. */ /* End of STRFUNCS.C */