tore@bibsyst.UUCP (Tore Morkemo) (03/27/91)
Could anyone please tell me what rindex() and index() are supposed to do ?? I found these in a bsd-source and since I'm on a SYSV I can't find them. Tore. +------------------------------ saw here ------------------------------+ ! Tore Morkemo, Bibliotek-Systemer A/S, N-3250 Larvik, Norway ! ! uucp: ...nuug!bibsyst.no!tore Tel: +47 34 82 202 ! ! tore@bibsyst.uucp Fax: +47 34 85 185 ! +----------------------------------------------------------------------+
bamford@cbnewsd.att.com (harold.e.bamford) (03/28/91)
In article <375@bibsyst.UUCP> tore@bibsyst.UUCP (Tore Morkemo) writes: >Could anyone please tell me what rindex() and index() are supposed to do ?? > >I found these in a bsd-source and since I'm on a SYSV I can't find them. #define index(a,b) strchr(a,b) #define rindex(a,b) strrchr(a,b) Good luck. -- Harold
tim@mismpc.dal.fsd.mot.com (Tim Dawson) (03/28/91)
tore@bibsyst.UUCP (Tore Morkemo) writes: >Could anyone please tell me what rindex() and index() are supposed to do ?? On System V, strchr and strrchr perform the same functions - typically if you: #define index strchr #define rindex strrchr everything will work OK.
niklas@appli.se (Niklas Hallqvist) (03/28/91)
tore@bibsyst.UUCP (Tore Morkemo) writes: >Could anyone please tell me what rindex() and index() are supposed to do ?? index == strchr rindex == strrchr Well, I would have mailed this if it hadn't triggered a question that's been floating in the back of my head for the last five years. Is there something like a porting guide for C-programs under Unix? This guide would present the differences between all the main variants of Unix. Specifically differences in library functions and ioctl commands are interesting. I know the knowledge is out there, has anyone written it down? Niklas -- Niklas Hallqvist Phone: +46-(0)31-40 75 00 Applitron Datasystem Fax: +46-(0)31-83 39 50 Molndalsvagen 95 Email: niklas@appli.se S-412 63 GOTEBORG, Sweden mcsun!sunic!chalmers!appli!niklas
jpm@logixwi.uucp (Jan-Piet Mens @ Logix GmbH, Wiesbaden) (03/28/91)
In article <375@bibsyst.UUCP> tore@bibsyst.UUCP (Tore Morkemo) writes: >Could anyone please tell me what rindex() and index() are supposed to do ?? Index() does the same as strchr() on SYS5, and rindex() is strrchr(). #define rindex strrchr #define index strchr Regards, JP -- Jan-Piet Mens, Logix GmbH jpm@logixwi.UUCP Moritzstr. 50, D-6200 Wiesbaden ...!uunet!mcsun!unido!logixwi!jpm
decot@hpisod2.cup.hp.com (Dave Decot) (03/29/91)
> Could anyone please tell me what rindex() and index() are supposed to do ?? > > I found these in a bsd-source and since I'm on a SYSV I can't find them. They are supposed to do precisely what strrchr() and strchr() do, respectively. You can solve the problem by adding this: #define index strchr #define rindex strrchr to all the source files that use them (or to a global header file), or by adding: -Dindex=strchr -Drindex=strrchr to your CFLAGS environment variable, either directly or in the Makefile. Dave Decot
robtu@itx.isc.com (Rob Tulloh) (03/29/91)
niklas@appli.se (Niklas Hallqvist) writes: >tore@bibsyst.UUCP (Tore Morkemo) writes: >Well, I would have mailed this if it hadn't triggered a question that's >been floating in the back of my head for the last five years. >Is there something like a porting guide for C-programs under Unix? >This guide would present the differences between all the main variants >of Unix. Specifically differences in library functions and ioctl commands >are interesting. I know the knowledge is out there, has anyone written >it down? In answer to this query, may I suggest 'Using C on the Unix System'. It is one of the NutShell books and I have found it to be of great use when trying to figure out what's what between System V and BSD. I will point out that it mostly addresses the system level calls though, so if you are looking for strchr == index, it's not going to help. However, signals, i/o, and other such stuff is very well represented from both points of view. > Niklas >-- >Niklas Hallqvist Phone: +46-(0)31-40 75 00 >Applitron Datasystem Fax: +46-(0)31-83 39 50 >Molndalsvagen 95 Email: niklas@appli.se >S-412 63 GOTEBORG, Sweden mcsun!sunic!chalmers!appli!niklas Rob Tulloh -- INTERACTIVE Systems Corp. Tel: (512) 343 0376 Ext. 116 9442 Capital of Texas Hwy. North Fax: (512) 343 0376 Ext. 161 (not a typo!) Arboretum Plaza One, Suite 700 Net: robertt@isc.com (polled daily) Austin, Texas 78759 GEnie: R.TULLOH (polled monthly)
stan@Dixie.Com (Stan Brown) (03/31/91)
niklas@appli.se (Niklas Hallqvist) writes: =>tore@bibsyst.UUCP (Tore Morkemo) writes: =>>Could anyone please tell me what rindex() and index() are supposed to do ?? =>index == strchr =>rindex == strrchr =>Well, I would have mailed this if it hadn't triggered a question that's =>been floating in the back of my head for the last five years. =>Is there something like a porting guide for C-programs under Unix? =>This guide would present the differences between all the main variants =>of Unix. Specifically differences in library functions and ioctl commands =>are interesting. I know the knowledge is out there, has anyone written =>it down? One source is _Portable_C_And_UNIX_Porgraming_ By J. E Lapin -- Stan Brown P. C. Design 404-363-2303 Ataanta Ga. (emory|gatech|uunet) rsiatl!sdba!stan "vi forever" "Operating Systems, Like Editors Are Religions" -- Armando Stettner
scs@adam.mit.edu (Steve Summit) (04/01/91)
In article <1311@appli.se> niklas@appli.se (Niklas Hallqvist) writes: >Is there something like a porting guide for C-programs under Unix? >This guide would present the differences between all the main variants >of Unix. Specifically differences in library functions and ioctl commands >are interesting. Portable C Software, by Mark R. Horton, published in 1990 by Prentice Hall, ISBN 0-13-868050-7, has much of what you're looking for. I have a historical question: can someone tell me when and why strchr and strrchr were first introduced, replacing the V7 index and rindex? I presume it was in PWB or System III or something. (I'm also curious about the other "new" str routines such as strcspn, strpbrk, strspn, and strtok; I suspect they appeared at about the same time.) Please reply by mail. Steve Summit scs@adam.mit.edu